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Best dressed: Kerry Washington

Get Kerry Washington's colour-block look

Best dressed: Kate Hudson

Get Kate Hudson's evening look

Best dressed: Anne Hathaway

Get Anne Hathaway's slip dress look

Worst dressed: Jessica Chastain

Get Jessica Chastain's sunny yellow look

Best dressed: Emmy Rossum

Get Emmy Rossum's boy-meets-girl look

Worst dressed: Rihanna

Get Rihanna's crop top look

Best dressed: Julia Roberts

Get Julia Roberts’ leopard print look

Best dressed: Blake Lively

Get Blake Lively’s pre-holiday look

Best dressed: Shailene Woodley

Get Shailene Woodley’s androgynous look

Best dressed: Halle Berry

Get Halle Berry’s colour block look

Best dressed: Rita Ora

Get Rita Ora’s ultra luxe look

Best dressed: Jennifer Lawrence

Get Jennifer Lawrence's tuxedo look

Worst dressed: Reese Witherspoon

Get Reese Witherspoon's sporty look

Best dressed: Emma Stone

Get Emma Stone's metallic look

Best dressed: Chloe Grace Moretz

Get Chloe Grace Moretz’s two-piece look

Best dressed: Gwyneth Paltrow

Best dressed: Naomi Watts

Get Gwyneth Paltrow’s super fresh look

Get Naomi Watts' nude glam look

Best dressed: Marion Cotillard

Get Marion Cotillard's pastel look

Best dressed: Emma Roberts

Get Emma Roberts' evening look

Best dressed: Diane Kruger

Get Diane Kruger’s super sweet look

Worst dressed: Megan Fox

Get Megan Fox’s floral look

Best dressed: Miranda Kerr

Get Miranda Kerr's sexy look

Best dressed: Hilary Duff

Get Hilary Duff's casual denim look

Best dressed: Olivia Wilde

Get Olivia Wilde's denim look

Best dressed: Reese Witherspoon

Get Reese Witherspoon's romantic look

Best dressed: Julianne Moore

Get Julianne Moore's elegant look

Worst dressed: Cate Blanchett

Get Cate Blanchett's fall look