Costume Institute Gala 2009

Celebrities, supermodels and the fashion elite gathered at New York's Metropolitan Museum of Art on Monday night for the pre-opening gala of the 'Model as Muse' summer exhibition. But what did they wear? Here's the pictures...

Marc Jacobs and Kate Moss wearing one of his designs.

Marc Jacobs

Anne Hathaway, Victoria Beckham

Stella McCartney

Kate Hudson, Liv Tyler

Dolce & Gabbana

Molly Sims, Rihanna

Marchesa

Bar Rafaeli, Kate Beckinsale

Louis Vuitton

Leighton Meester, Madonna

Chanel

Diane Kruger, Anna Wintour

Atelier Versace

Claudia Schiffer, Jessica Biel

Versace

Blake Lively, Cindy Crawford

Calvin Klein

Hilary Swank, Eva Mendes

Beyonce's Balmain Moment

It seems that singer Beyonce has developed an obsession with designer du jour, Balmain. Looking great in the S/S 09 military style jacket and the black sequined LBD with train from the A/W 09 collection, Beyonce's current fascination with the French fashion house looks set to stay.

Sailor Chic

D&G

This week the high street seems to be flooded with stripes, anchors and anything else of a nautical nature. Bell bottom trousers, rope detail and espadrilles are the best way to wear this look. In a colour palette of navy, white and red, sailor chic is set to be a big hit this summer.

This trend sprung up all over the runways during the Spring/Summer 09 shows with sailor influences noticeable at D&G, Michael Kors, Emporio Armani and Hussein Chalayan and there's no time like the present to stock up on this maritime trend.