Who: Sienna Miller

Where: At a presentation for the new Hugo Boss fragrance Boss Orange - for which she is the face - in Madrid.

Wore: White harem trousers with a dove-grey silk top under a crop-sleeve black blazer with grey cut-out heels and a chunky black bangle.

Who: Natalia Vodianova

Where: At the ARK Gala Dinner at the disused Waterloo International Terminal in London.

Wore: A structured, black one-sleeved cocktail dress, with a necklace by Louis Vuitton, a black clutch and black peep-toe shoe-boots.

Who: Tolula Adeyemi

Where: At the Royal Academy Of Arts Summer Exhibition party in London.

Wore: A pale pink gown by Louis Vuitton with a gold metallic clutch and gold bracelet.

Who: Emma Watson and Kate Bosworth

Where: At a dinner hosted by Bosworth in honour of Rodarte designers Kate and Laura Mulleavy, at Harvey Nichols in London.

Wore: A blue and black chiffon and fishnet dress with cream and black satin ankle-strap heels (Watson), and a champagne knit and chiffon dress with matching satin peep-toe pumps (Bosworth). Both dresses by Rodarte.

Who: Liya Kebede

Where: At the Gordon Parks Foundation\'s Celebrating Fashion Awards Gala in New York.

Wore: A textured scarlet cocktail dress with asymmetric neckline with a black clutch and black heels.

Who: Stella McCartney

Where: At the Royal Academy Of Arts Summer Exhibition party in London.

Wore: A floral print cocktail dress with peaked shoulders cinched with a black obi belt plus black heels.

Who: Carla Bruni-Sarkozy

Where: At the 65th D-Day anniversary ceremony in France.

Wore: A white shift dress with pintuck neckline cinched with a skinny black belt under a black crop-sleeve day coat with black kitten heels - all by Christian Dior - and a chain strap handbag.

Who: Anouck Lepere

Where: At a boat party hosted by Missoni during the Venice Biennale.

Wore: A silk, patterned maxi dress cinched with a wide belt, by Missoni.

Who: Marion Cotillard

Where: Arriving at the Bike In Style Challenge winner announcement and awards ceremony at the LVMH Tower Magic Room in New York.

Wore: A grey wool crepe suit cinched with a leather belt, with ‘figurine-heel\' shoes and a matching grey clutch, all by Dior.

Who: Yasmin Le Bon

Where: At the Raisa Gorbachev Foundation Annual Fundraising Gala Dinner in London.

Wore: A lime-green silk gown by YLB for Wallis, with a white fur stole, teal satin clutch, satin pumps and ruby dangly earrings.

See previous Week in style galleries