Mischa Barton plays peekaboo in cut-out dress while Tali Lennox is an ethereal beauty at Women for Women Gala

Mischa Barton plays peekaboo in cut-out dress while Tali Lennox is an ethereal beauty at Women for Women Gala

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UPDATED:

23:17 GMT, 3 May 2012

She was out in the fashion wilderness for several years, but Mischa Barton is fighting her way back into the stylish set's good graces.

The actress turned heads in a slinky white dress at the Women for Women International gala in London on Thursday night.

Mischa, 26, played peekaboo with photographers in her cutaway, Marilyn Monroe-esque dress.

Grecian goddess: Mischa Barton wore a flimsy cutaway white dress to the Women for Women International Gala at The guildhall in London on Thursday night

Grecian goddess: Mischa Barton wore a flimsy cutaway white dress to the Women for Women International Gala at The guildhall in London on Thursday night

Grecian goddess: Mischa Barton wore a flimsy cutaway white dress to the Women for Women International Gala at The guildhall in London on Thursday night

Miss Barton teamed the flimsy frock with black heels, a gold necklace and on-trend plum lipstick.

She wore a black coat to ward off the unseasonable chill up to the last minute, before throwing it off on the red carpet to showcase her outfit.

Also in white was Tali Lennox, who was an ethereal beauty in her sheer tulle gown.

Ethereal: Tali Lennox looked heavenly in a one-shouldered tulle confection

Ethereal: Tali Lennox looked heavenly in a one-shouldered tulle confection

The model's endless legs were just visible beneath the layers of delicate floor-length fabric.

Tali wore a mint green cocktail ring that matched her nail polish, and her hair pulled back into a bouffant with loose strands around her face.

Also in attendance were singer Dionne Bromfield and actress Olivia Grant.

Back on the fashion radar: Mischa covered up in a black jacket against the chill outside the event before posing for photographers

Back on the fashion radar: Mischa covered up in a black jacket against the chill outside the event before posing for photographers

Back on the fashion radar: Mischa covered up in a black jacket against the chill outside the event before posing for photographers

Back to black: Zara Martin wore a slinky shimmering black gown

Charlotte Dellal wore an off-the-shoulder gown and Forties-style hair

Back to black: Zara Martin wore a slinky shimmering black gown, while Charlotte Dellal wore an off-the-shoulder gown and Forties-style hair

Olivia wore a mint green gown with a flouncy high neck and black and gold embellishment along the bustline, while Dionne wore a colourful mini dress.

Zara Martin wore a floor-length shimmering black gown with long sleeves. Her demure look was offset by her grungy dark roots and peroxide blonde hair.

Charlotte Dellal took inspiration from the Forties with her curled hair which she wore with an off-the-shoulder gown.

Cute and colourful: Dionne Bromfield wore a bright mini

Olivia Grant wore a high-neck mint green gown

Cute and colourful: Dionne Bromfield wore a bright mini, while Olivia Grant wore a high-neck mint green gown

The gala, at The Guildhall in London, was held in association with Harper's Bazaar magazine.

The One Show presenter Alex Jones hosted the event.

Guests celebrated and honoured individuals' significant contributions to Women for Women International.