Starre Varten, author of the Eco-Chick Guide to Life, writing at Mother Nature Network poses the question – is it acceptable now to wear pyjamas all day?

Surely not. And yet the trend for stay at home mums to turn up at the school gate in their nightwear is increasing, and teens have been seen shopping on Sundays in their PJs.

Of course the trend towards casual clothing has accelerated, and women now feel completely comfortable to walk around all day in leggings and yoga pants, where a few years ago such clothing would have been gym attire only. And as Varten points out, casual clothing breaks down class and income distinctions and allows everybody to be treated equally. In the days when rich people dressed one way and poor another, social distinctions were clearly made on sight – now that we all wear jeans and T-shirts, even the President of the USA (on his days off) wears hoodies, we’re told – we all have the opportunity to interact without barriers created by clothing judgements.

On the other hand, there’s no doubt that overly casual attire will still lead to social isolation. The mothers who don’t get out of their sleepwear to collect their children from school may struggle to obtain employment or other opportunities when they seek them if their habit of dressing down has become ingrained because it can suggest to others that these are people who have no interest in achievement and little desire to emulate others.

So where do we draw the line? The answer may be simple – don’t wear your PJs in the street, instead, wear your streetwear to bed! A camisole top and shorts, for women, or short sleeved T-shirt and shorts for men, can be as comfortable as nightwear and if you really can’t be bothered to change your clothes, allows you to leave the house without earning yourself a reputation for idleness.

Clare Balding, BBC presenter, has said in the Radio Times that, ‘Female faces will dominate the British medal haul in 2012’ in reference to the London Olympics. Balding pointed out that women’s ability to take part in codified competitive sport is nearly 900 years behind that of men, but that women are likely to lead the medal tables for Britain.

The impact of sport on wider society is easily seen through sports clothing: the hoody, once the preserve of boxers, the rugby shirt and polo shirt and jogging bottoms or trackies, worn originally by track athletes, have all become part of mainstream casual clothing.

This new freedom to play sport and wear sporting clothing has given many women a new freedom to invest in their bodies as competitive instruments and that has led to a change in their approach to clothing. Many more women now wear what is called Sports Luxe and it is a key feature of the West Coast Cooler Fashion Week in Belfast. Sports Luxe is clothing with a dual purpose: looking good and feeling good in times of activity. Designers such as Marc Jacobs, Hugo Boss and Philip Lim have made this particular style their own by using rich colours and unusual fabrics: plum coloured jogging pants or tuxedo shirts that wick away sweat, for example.

For those who can’t afford designer clothing a stylish women’s polo shirt worn with jeans or jeggings and a pashmina, or casual trousers or leggings teamed with a cashmere top and designer trainers both work as Sports Luxe statements.

A-list actors took to the catwalk for Prada’s menswear show this week. Gary Oldman, was the show closer (and show stealer) but Adrien Brody, Jamie Bell and Willem Defoe also got up and dressed up for the catwalk show.

It opened with an outfit that will define the autumn look – a black coat (think Sherlock Holmes – Cumberbatch, style) worn with a white shirt and under that, a lightweight white polo-neck in silk. Lots of suit jackets, sharp tailoring and masculine detail were evident and key colours were black, white and red.

If you can’t see yourself, or the man in your life, wearing a white silk polo necked sweater under a shirt, consider going for a fitted white polo-shirt with a lightweight white T-shirt underneath. Same look, one notch down in power dressing.

But power really was the theme and high collars – even popped collars on polo-shirts and modern tailoring were very evident. Suit style jackets were often double-breasted and worn with badges or studs to make them less formal.

A recent report by Bain & Co claims that luxury menswear is currently the fastest-growing area of the clothing market with double the growth rate of luxury women’s wear and the trend towards evening dressing is set to continue. Cashmere scarves and monogrammed shirts are keynotes for everyday dressing in the year ahead.

The party season is here and whether you love or hate it, you have to show up and show willing with your colleagues. It’s becoming more and more popular to offer the clothing guidance ‘business casual’ – but what does that mean for a party?

For men it means trousers, not jeans. Chinos are acceptable with a formal shirt but not with more casual clothing such as a jumper. A jumper can be worn with formal trousers though. Polo-shirts and T-shirts are not usually acceptable for men to wear for a ‘business casual’ party or dinner, but ties are not necessary and shirt sleeves can be long or short. Jackets are usually formal, not casual, and worn with scarves and gloves and overcoats if necessary.

For women it’s a huge problem because it can vary between a casual (cotton) dress and leggings to formal dress and pearls, from suit with silk blouse through to smart black jeans with a sparkly top. A skirt can be worn with a T-shirt and either long boots or enclosed shoes but not sandals or peep-toes. Clever women will put a dressy scarf, pashmina or shrug in their handbag along with hairpins and a sparkly hair accessory so that if they arrive and feel underdressed they can run straight to the ladies and smarten themselves up with an up-do and posh wrap.

Women’s jackets for business casual events should be fitted or fun-fur, more casual jackets are not considered acceptable. Of course if the venue has a cloakroom you may be able to get away with your warm but casual fleece.

According to one author, there are three levels of business clothing:
1.    Traditional
2.    General
3.    Casual
And if you’ve never been sure what made business clothing and just ‘work clothing’ different, it’s all about the game, apparently.

Knowing which of these is appropriate for the business you work in is empowering to you and in the USA, at least, you can be coached to find the right way to dress. If you think your business clothing could do with a boost, there’s no need to hire a coach. Use our simple guide to work it out.

Traditional – business suits, of course, with collared shirts and ties. Women get to wear both trouser suits and skirt suits, leather shoes (no open toes for either gender) worn with socks or tights – no bare legs even in summer! Basically it’s the kind of clothing that should be worn to a business awards dinner – what we in the UK would call posh, and the Australians call a ‘frocked up’ event.

General – still requires a tie and formal shirt from men, but can mean wearing a tailored jacket and trousers rather than a full suit. Women can now add businesslike dresses (nothing floral or floaty) and smart trousers if they are worn with a tailored jacket.

Casual – finally men can ditch the tie, but they need to stick to wearing suit type outer garments with sports shirts, knit shirts like polo shirts with formal trousers, and smart jumpers over a collared shirt. For dress down days, chinos can be worn. Women can now wear trousers with formal shirts, skirts with blouses without a shirt, two-piece knitwear with tailored skirts or smart round-necked T-shirts with a formal skirt and tailored jacket. Peep toe and sling back shoes are still unacceptable, even in dress down days.

In the past year, Indian shoppers have got into buying clothing online in a big way. The division by gender is around 70% male to 30% female, with retailers focusing on social media to reach out to women who are a growth market for all forms of retail in India. Global clothing companies are rushing to get into this market, especially to bring their retail expertise to many customers who live in small towns, villages and the hamlets or rural India.

Casual apparel has the second highest seller online in India: ahead of books and DVDs. India’s ‘internet population’ has moved into e-commerce with ease: the nation has around 10 million online shoppers, a market that is growing at 40-45%, compared to the global rate of around 8-10% growth. eBay India retails a garment every seven minutes – many of which are sports shoes and clothing with Adidas and Reebok featuring highly in the popularity stakes.

Children’s wear is also a rapidly growing market with Indian mums investing in clothes and shoes, along with feeding bottles, buggies and toys. Menswear is growing too:one company that sells work shirts at under 900 rupees each has sold 2,500 shirts since it launched in August and is expecting to sell 5,000 collared shirts a month in 2012.

Personalised workout clothing is a big seller, with monogrammed hoodies and polo-shirts being a regular purchase by individuals and as presents or to commemorate work events such as promotions or anniversaries, which are popular celebrations in Indian culture.

Hollister has become synonymous with twilight retailing: and teenagers seem to love buying casual clothing in such dark conditions that they don’t actually know what colour their new garments are until they’ve got them out of the store. According to the Daily Mail, parents are complaining about not being able to see the true colour or the price of what they’re buying, and even of losing track of their teenagers in the store.

The ‘greeters’ whose six packs are on display even if there is snow on the ground are also viewed with suspicion by some parents who feel they are tacky or maybe even that the young men are being exploited.

Even so, the Hollister experience seems to be a popular one, so what can parents learn from it about teenagers and shopping?

1. Casual clothing needs special focus – because teenagers spend most of their time in jeans, joggers, hoodies and trainers, these, not party outfits, are the focus of their attention, and the party atmosphere of Hollister can make them feel they are getting more for their money. To get your teen to shop in less expensive outlets, or even online, arrange for one of their friends to come round, let them play loud music and lay on pizza, snacks and multi-player gaming in between bouts of online clothing browsing. This makes them much more likely to engage with the idea
2. Colours matter – Hollister are coy about the number of returns they receive but it does seem to be the one part of the shopping process that disconcerts teens. Point out that online shopping allows teens to look at all the colours, sizes and options, to do comparison shopping and even to google potential purchases and see reviews on their wearability. This encourages a picky shopper to realise that they can spend as long as they like debating a black T-shirt versus a red one, online but in the shop it gets annoying to family and friends!
3. Feed the senses – Hollister spray perfume around their shop and on their customers to make the experience memorable. Do the same for your teen shoppers by squirting the room with their body spray before they start shopping – believe it or not, psychologists say that a favourite scent can  prejudice us in favour of an experience by up to 46%.

A new study in the peer-reviewed Public Library of Science journal PLoS ONE suggests that our perception of clothing may actually influence our judgements about race.

The study required participants to classify each image that appeared on a screen as being either a black or white person, but the images were randomly computer assigned clothing that was either considered to have low social status (a caretaker’s uniform or jog pants) or  something high status such as a business suit or formal shirt.

Interestingly, most participants were heavily influenced by the clothing worn by the computer generated image, and clothing stereotypes literally altered the way they saw people – the ethnic race of each face was deliberately ambiguous so the participants relied on clothing cues and many decided that people in high-status clothing were white, regardless of the ambiguity of the face. While the results of the study challenge a widely held belief that perception of race is a simple judgment, based purely on a person’s facial features, there is also fascinating information about how clothing influences the judgements that we make about individuals.

As an example, the Sydney Morning Herald has reported that Steve Jobs once thought about getting all Apple staff to wear a uniform like Japanese companies do. Despite being persuaded against this by the almost universal rejection of his idea by his workforce, he went on to establish a personal ‘uniform’ of jeans and black turtleneck sweater which has gone on to become an industry standard with around 70% of IT people adopting the dress code of chinos and polo-shirt. The new CEO of Apple, Tim Cook, is fitting right in by wearing dark-collared polo shirts for the cameras, making clear his identification as a ‘geek’ rather than an ‘exec’ which allows Silicon Valley to embrace him as Jobs’ successor.

A recent show at Imperial College, London offered vanishing dresses (using a blend of polymers that dissolve when exposed to H2O), hoodies that actually clean the air as you walk through it, thus leaving the street cleaner than when you found it, and special underwear that makes you fitter.

Within five years we may see full-body compression underwear that allows even ordinary gym goers to run faster, lift more and punch more strongly. Also on the cards is a sports bra that shapes itself to the wearer, and most interestingly to many women, ‘clever’ undies that use the body’s own heat to generate tiny electrical pulses that activate the muscles so that you become slimmer the more you wear the garment. This technology could also be used in socks to help frequent flyers and those who stand all day, by returning blood to the upper parts of the body, thus reducing the risk of clots, thrombosis and varicose veins.

Photo-catalytic clothing is already being tested. It involves cotton clothing treated with a chemical layer that reacts with light to break up water in the air and create radical molecules that neutralise pollution – fitted into the jogging bottoms of running groups or the jackets of street workers this layer could actually make our cities cleaner and safer at no cost to us.

For men, New York has much more effect on street fashion than Paris, although London still generally carries the day with male tailoring. So for next spring, guys will be finding their partners trying to get them into double-breasted leather jackets and coats (think DI Gene Hunt) and quite a bit of khaki worn with striped shirts. Desert boots are back and Tommy Hilfiger has a massive number of new polo-shirt colourways. Michael Bastian has a James Dean influenced collection, including motorcycle jackets, of course, with rain-washed striped shirts and T-shirts, aviator sunglasses and surf shorts (?)

There was a focus on quality with relaxed styling being crucial – polo shirts flapped more at the waist than in recent years and trousers were bulkier too, with less skinny legged jeans appearing in the casual sections of the collections.

The road trip look turned up in the Nautica show too, so board shorts and leather boat shoes alternated with a lot of smart blue and white, referencing the navy, and some exciting bad weather jackets in surprising shades of yellow and orange, like the snorkel parkas recently only seen in South Park animations.