WHAT'S underneath counts - especially when it comes to your wardrobe. Katie Wright uncovers the new season smalls with big potential.

The right undergarments can make all the difference to an outfit, and with the profusion of sheer fabrics and off-the-shoulder styles in the shops for autumn/winter, it's more imperative than ever that your lingerie isn't left to chance.

Invest wisely now and you won't be left scrambling at the last minute to find a bra that flatters your shape - and your new season purchases.

Give your autumn wardrobe the support it deserves with these unbeatable undies...

Decent exposure

Bardot necklines, strappy camis and 'cold shoulder' tops - unless you intend to go bra-less - all call for a supportive strapless bra.

Moulded, non-wired bras offer the smoothest silhouette (so ideal with silk), but if you're used to a bit of added oomph, look for underwired padded styles.

For larger cup sizes, longline strapless bras offer maximum support.

:: M&S Collection Superhold Lace Non-Wired Padded Strapless Bra, £28; Firm Control Waist Sculpt Cincher, £30 (www.marksandspencer.com)

:: Ultimo Fuller Bust Ivory Low Back Strapless Bra, £36 (Figleaves.com)

:: Simone Perele Wish Strapless Plunge Bra, £78 (www.harrods.com)

Reveal your dark side


The Lepel Fiore Black Full Cup Bra The masses of black lace, tulle and high-necked ruffles seen on the AW16 catwalks have now hit the high street, with the Victoriana blouse the key piece of the season.

The gothic glamour trend demands a suitably dark bra or two that you don't mind peeking from beneath your sheer shirt. Luckily, that won't be a tough shopping task, as the autumn underwear collections are full of ebony, burgundy and berry shades.

:: Lepel Fiore Full Cup Bra, £22 (Figleaves.com)

:: Parfait by Affinitas Estelle Black Padded Bra, £34, and Briefs, £15 (www.miodestino.com)

:: Boux Avenue Toyah Non-padded Triangle Bra, £22, and Brazilian Thong, £14 (www.bouxavenue.com)

Show off your best assets

From gothic glam to velvet to modern heritage, the autumn trends are a goldmine for curvy girls, you just need the undergarments to suit.

Make sure your silk slip or velvet midi dress clings in all the right places by pairing a smooth balconette bra with high-waisted briefs.

Heritage fabrics like tweed and brocade aren't quite so clingy, so you can indulge in lacy styles underneath your co-ords or tailored blazer.

:: Panache Envy Balconette Bra, currently reduced to £32 from £42, and High Waist Shaping Briefs, currently reduced to £25 from £35 (www.littlewoods.com)

:: Freya Fancies Bright Red Longline Bra, £30 (LeiaLingerie.com)

Be a good sport


The Only Play Lola Training Bra Victoriana vibes may rule on the catwalks, but back in the real world, the athleisure trend isn't going anywhere - and with workout gear increasingly featuring cut-outs or open backs, sports bras now count in the 'underwear as outerwear' category.

Contrast is key here: if you tend to favour black and grey fitnesswear, pick a neon or print bra, and if you love bright prints, a minimalist colour palette is the way to go.

:: Only Play Lola Training Bra, £18 (Little-Mistress.com)

:: Sweaty Betty Virasana Padded Yoga Bra, £40 (www.sweatybetty.com)

Get the look

And the gong for best dressed at the TV Choice Awards goes to... Susanna Reid, for her on-trend ruby red cold-shoulder gown. The presenter looked a million dollars, but her dress is actually high street and in John Lewis stores now: the Phase Eight Amail Maxi Dress, £150 (www.johnlewis.com).

Style steal

Want to revamp your lingerie drawer on a budget? Peacocks' new season range features luscious autumnal colours and pretty lace detailing, with prices starting at just £2.50 for thongs and £5 for bras, so go grab yourself a BRA-gain or two...

:: Peacocks Red Lace Back Bra, £6; Burgundy Helenca Lace Thong, £2.50 (www.peacocks.co.uk)