As much as I love the high street, there's always that concern that everyone will end up buying 'that' key piece and after all, who actually wants to sit across someone in the office or at an event wearing the exact same outfit? But don't worry, that's where Whistles come in.

Starting early September, the high street favourite will unveil their new Limited Edition by Whistles collection and as the name suggests, the line is small. Each of the 70 pieces in the collection is only being produced in editions between 20 and 50 and will be available in limited stores to make sure that each piece is truly special.  The aim of the line is to tap into the core pieces of the Whistles brand so expect classic tailoring, cashmere knitwear and leather leggings along with printed pyjama-like separates.

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The trouser suit has long been a stalwart piece in women's wardrobes. Since Yves Saint Laurent created his 'Le Smoking' women's tuxedo back in 1966, the piece has no doubt morphed into one of the single most transformative pieces of women's wear and for A/W12, it made a serious comeback. Just like Saint Laurent, this season designers seem to be more attune to the fact that women need clothes that make sense as much as they appeal aesthetically and as a result, we're spoilt for choice.

You can generally guage what the big trends will be by watching the Prada show and this season Miuccia Prada made a big statement. At both Prada and Miu Miu the trouser suit dominated sending a clear message that if there's anything you need to buy this coming season, it's that.

Throughout the shows in February there was a lot of talk about the clothes being like an armour, preparing women for the tough world out there right now and it's true. At the rate things are going, we can all do with as much help as we can get and there's no denying it's transformative powers. Even Caroline Issa spoke about it recently in the latest issue of ELLE UK. Talking about her recent Tom Ford suit purchase she said: 'When I wear it I feel like the chicest person alive - it is wearable art.' Whistles CEO Jane Shepherdson shared the sentiment. 'It's about authority,' she said in an interview with Karen Dacre about the suit's power in the workplace. 'If I feel I need 'armour' any day, then I will pull on a trouser suit. It let's people know you're serious and not to e messed with.' My-Wardrobe's founder Sarah Curran said the same thing. 'There's definitely an attitude that goes with wearing one,' she told Dacre. 'There is something about a trouser suit that gives an air of confidence that a dress could never do.'

From top left: Acne, Dries van Noten, Miu Miu, Todd Lynn, Todd Lynn, Alexander Wang, Celine, Elizabeth & James, Miu Miu and Prada

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The 1st April is an important date to mark in your diary: Roksanda Illincic's follow-up collection will be hitting the rails in a Whistles near you. With the success of last year's debut collection, a capsule collection of silk cocktail dresses, with the uber-luxe high street store, Ms Illincic's second installment will feature her signature intricate detailing on fluid and feminine fabrics.

Expect draping, fold-over panels, nipped waists and a range of light and airy hues in a collection that has been described by Jane Shepherdson, CEO of Whistles, as "even more exquisite that the first... a fairy tale range of just 10 dresses that are instantly recognisable as hers, and showcase her signature combination of elegance and edginess perfectly." Or in the words of the designer herself, "the collection was inspired with the feelings that summer brings in all of us: fun, happines and lightness!" Sounds like the perfect answer to combating the winter blues brought on by the grisly January weather.

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Naomi and I have long said Roksanda Ilincic's brand is the British Rodarte, so we couldn't be more excited that the designer has inked a deal with Whistles for autumn/winter 2009. She'll design seven cocktail dresses, retailing for £175 to £300, available in Whistles stores, plus Harrods, Selfridges and Brown Thomas from early September.

"I have long been a huge fan of Roksanda, and to have her design such an exquisite collection of dresses for Whistles has been a unique opportunity," Whistles CEO Jane Shepherdson told Vogue UK. "We have worked closely at every stage of the design process with Roksanda to capture her unique sense of play and contrast in colour, fabric and texture. It would be hard not to fall in love with the resulting collection."