There's no denying it now. The new season is definitely upon us. Bye bye final hopes of an Indian Summer, it's time to whip out the winter coat and start planning your cold-weather wardrobe. To help, I've compiled a list of my top ten most lasting, wearable trends for the new season.

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1. Gunmetal Metallics
Slightly subtler than the usual sci-fi silver, this season metallics get moody with the best offerings coming in shades of sexy gunmetal grey. On the catwalk Dolce & Gabbana went all-out with a crumpled dress and padlock belt...perhaps not the best for a Friday night out but great to admire from afar. Slightly more wearable but no less expensive is the Lela Rose frill bibbed lurex dress for a whopping £1,275. On the high street, River Island have hit a trend double-whammy with their gunmetal body-con dress for £29.99. It's definitely not for the faint-hearted, but if you have the body to pull it off, it'll definitely get you noticed.
Also try: Burberry, Alexander McQueen, Krisp, Bay Trading, ASOS.com

Keep reading for nine more hot trends for the new season!

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2. Chunky Knit Cardigans
You're nothing without a big, toasty chunky knit this season. Surprisingly flattering (just stay away from heavy cabling and extra texture if you're curvier) and really, really warm, these are a blessing if you feel the cold as you can wear them inside without people moaning about how you'll 'not feel the benefit later'. On the catwalk Burberry showed amazing chunky black knits topped with buckles and belts. Diane Von Furstenberg's grey lacy offering is a bit more of a feminine take on the trend, and yours for £395. On the high street, Oasis come up trumps with their high necked grey cardi with roomy pockets for £70.
Also try: Giles, Reiss, Primark or knit one yourself!

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3. Wide Leg Slouchy Trousers
If you're really brave, you can go for a high waist too for a really bang-on look, but for mere mortals and those of us with bums, perhaps a slightly more low-slung look will be more flattering. Perfect with the season's waistcoats and blazers, the wide-leg trouser instantly hides bumps and lengthens the leg. Best work with a killer heel (I'd go for a boot) this is the anti-skinny for those of us who're fed up of looking like emo kids. On the catwalk Proenza Scouler went for a very masculine look, but you can easily go the other direction and team these with frilled blouses or victorian-inspired shapes. The designer option is BCBG Max Azria for $258, while good old Topshop have a great alternative on a budget for £45. And don't think you can't wear these because you're too short - many high street stores now have great petites departments that offer up the same styles in shorter leg lengths.
Also try: Stella McCartney, Marc Jacobs, Marks & Spencer, Dorothy Perkins.

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4. Double Strap Patent Mary-Janes
When the original Miu Miu twin-strap MJ's (left) hit the shelves they were an instant success. They've unsurprisingly sold out at Net-a-Porter, as everyone catches on to their practical charm. Much easier to wear than slip-on shoes because of the extra support, they manage to combine sexy with smart and have become a bit of a classic. Luckily for us, the look has now tricked down to the high street, with everyone offering up their take. The pair shown here are £25 from ASOS.com, but Dorothy Perkins also do a great pair for the same price (I wore them for a night out and they were the comfiest heels I've bought in a long time.
Also try: Aldo, Steve Madden, Primark, Dune.

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5. Past-knee Pencil Skirts
The pencil skirt has been floating around for ages, but this season it's set to really come into its own, though the hem is dropping slightly to sit just on or just below the knee. You'll need toned calves to really work this look, but if you wear heels all the time you're probably halfway there already! On the catwalk the best interpretation of this trend was from Christopher Kane, who shows figure-hugging velvet dresses that hugged curves and stuck two fingers up to the volume trends of past seasons! Shopping now, try Marc Jacobs' felt panelled dress with a red bow at the neck, a snip (hah!) at £1,385. Much, much more affordable is a bit of simple chic from French Connection. The blue 'Bella' dress is yours for £55. Just make sure you wear suitable underwear, this look comes with a huge VPL warning.
Also try: Nanette Lepore, Wallis, Debenhams, Marks & Spencer

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6. Peter Pan Collar Dresses
On the other end of the scale from the sexy secretary look of the pencil skirt is the cute, girly Peter Pan collar on a monochrome mini. It's definitely one for the young and quirky amongst us, but with subtle takes on the trend like the breezy catwalk interpretation from Temperley, it's not as cutesy as you might initially imagine. Bella Freud's dress sexes-up the look with transparent panels, a look that wowed the buyers at cult boutique Matches. The dress is on their rails for £228. On the high street, Warehouse add a puffball finish to their high necked offering. Not the easiest style to wear, but one worth attempting if you love the look. Their dress is £40.
Also try: Betsey Johnson, Anna Sui, ASOS.com, Primark.

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7. Bright Trench Coats (satin if you dare)
This season seems to be about extremes, and while a lot of basics seem to come in dull black, charcoal and grey, there are some really bold flashes of colour about, particularly on outerwear. The bravest amongst us should give the satin trench a go. It might be thoroughly impractical (just wait until it rains...or even until you sit down) but it looks great. On the catwalk we have D&G's red satin number topping a polka dot pussy bow blouse, while Alexander McQueen has gone all out with a quilted purple coat that demands attention (not to mention a bank loan, at £1,325). Finally on the high street, Wallis have come up with a slightly more functional alternative in their bright red 3/4 trench for £60.
Also try: Diane Von Furstenberg, Oasis, Dorothy Perkins.

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8. A Gorgeous Purple Bag
One of the big colour trends for the season, purple is definitely one to watch. Dior showed beautiful pinky-purple bags on the catwalk, but the big designer bag to watch is Mulberry's 'Mabel' in delicious purple patent. The fabric has also been used to revamp the classic Bayswater for the new season and if you have £600 to spare, these are the bags to go for. If you live in the real world, however, try Topshop's holographic clutch for £20 or Oasis' cross-body leather bag for £30. Purple looks great with just about every colour but is particularly good with two of Autumn's other key shades - grey and acid green.

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9. Long Leather Gloves
I'm so glad it gets cold in the UK, because I'm obsessed with the new fad for leather gloves. Though there are plenty of short ones on offer too, you'll be really on-trend if you invest in a long pair, particularly if they're teamed with a bracelet sleeved jacket (to look stylish and keep warm - always good). Follow the lead of girls on the Marc Jacobs catwalk and add a chunky bangle to your wrist, or scrunch them down to create a bit of volume. High street stockists include Topshop (£25), Wallis (£28) and Warehouse (£30).

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10. A Bit Of Bold Colour

It's a very subdued season this time round, but that just means when the flashes of colour come, they're all the more exciting. From aqua at Marc Jacobs to bright pink at Diane Von Furstenberg (which she told us it was her tip for the season) and purple at Pucci (above) if you're going to do it, do it properly and head to toe! Lanvin's mad ruffle collar dress is the hot designer way to give purple a go if you have a spare grand, or head to Monsoon with £75 to grab their romantic bow waisted offering instead. Team it with matching tights if you're brave!
Also try: Matthew Williamson, New Look, Primark, French Connection.