Who: Cheryl Cole

Where: Arriving off a flight at Heathrow.

Wore: A stripey long-sleeve top with a shearling scarf, William Rast jeans, patent platform heels, with a Louis Vuitton bag and Kangol hat. 

By Danielle Radojcin

Who: Alexa Chung

Where: At the Elle Style Awards after-party in London.

Wore: A white petticoat dress - with black bra straps showing - with black t-bar heels, long stranded necklaces and a chunky cocktail ring.

Who: Julia Restoin-Roitfeld

Where: At a gala dinner for amfAR to launch New York Fashion Week.

Wore: An embellished black strapless cocktail dress, with a black clutch and heels. 

Who: Doutzen Kroes

Where: The model was snapped at the amfAR gala to launch New York Fashion Week.

Wore: A scarlett chiffon dress with keyhole neckline, with matching red heels and large gold earrings.

Who: Rihanna

Where: Leaving the Opening Ceremony boutique in Los Angeles.

Wore: A lilac shirt with a white mini-skirt, nude strappy heels and a pearl necklace.

Who: Jessica Stam

Where: At the amfAR gala to launch New York Fashion Week.

Wore: A classic black gown with sweetheart neckline, black peep-toe heels and silver mesh earrings.

Who: Freida Pinto

Where: At the reopening of Liberty, in London.

Wore: A coral pink dress, with black studded heels and black clutch. 

Who: Donna Air

Where: At the Elle Style Awards, London.

Wore: A ruched black strapless cocktail dress with a white clutch and ankle strap heels. 

Who: Santogold

Where: At the opening of Matthew Williamson\'s new boutique in New York.

Wore: Stonewashed skinny jeans with an embroidered waistcoat over a turquoise t-shirt, with two-tone pumps. 

Who: Anja Rubik

Where: At the amfAR gala dinner to launch New York Fashion Week.

Wore: A distressed pale lilac gown by Alberta Ferretti, with a black clutch and a metallic chainmail necklace.

Who: Kate Bosworth

Where: Shopping in Los Angeles.

Wore: Ripped stone-washed jeans, with a grey sweatshirt, blue pumps, a grey suede shopper, Aviator sunglasses and a coral pink snood. 

Who: Keira Knightley

Where: At the Berlin Film Festival.

Wore: A grey wool tailored suit, with platform heels and black chain-strap handbag.

Who: Edita Vilkevicuite

Where: The model was snapped at Matthew Williamson\'s boutique opening in New York.

Wore: A white shift dress with jewel appliqué neckline, spike-heeled python boots by Christian Louboutin, and a black clutch.

Who: Joy Bryant

Where: At a party hosted by BMW and Vogue in New York.

Wore: A silver shimmer strapless jumpsuit by Missoni, with a dark red clutch and gold cuff. 

Who: Anouk Lepere

Where: At a Prada party at the Double Club in London.

Wore: An op-art monochrome jumper, with black peg leg trousers and blue and patterned pumps. 

Who: Lindsay Lohan

Where: At Matthew Williamson\'s boutique opening in New York.

Wore: A coral pink strapless mini-dress with beaded pockets, by Matthew Williamson, with blue python stiletto heels by Christian Louboutin.

Who: Tilda Swinton

Where: At the Berlin Film Festival.

Wore: A dove-grey tailored suit, and gold \'cage\' shoes by YSL. 

Who: Lily Donaldson

Where: At the amfAR gala dinner to launch New York Fashion Week.

Wore: A cream silk bias cut halterneck gown.

Who: Sienna Miller

Where: At the Elle Style Awards, in London.

Wore:  A sequinned cocktail dress by Louis Vuitton, with a black tuxedo blazer, opaque hosiery and t-bar heels.

Who: Gwyneth Paltrow

Where: At a charity event at the Beverly Wilshire Hotel in Los Angeles.

Wore: A white tuxedo jacket by Balmain over a white satin dress, with a glass bead necklace and heels by Roger Vivier.

See previous Week In Style galleries