Moore turned heads in a tomato-red Tom Ford gown, while 'Wild' star Reese Witherspoon wore a purple Stella McCartney ensemble with a deep V neckline.
Kristin Scott Thomas looked glamorous in a jet black vintage gown.
'The Imitation Game' actress Keira Knightley, alongside musician husband James Righton, was a lesson in chic maternity, dressing in posy dappled Giambattista Valli.
Felicity Jones of 'The Theory of Everything' bloomed in Dior spring 2013 Haute Couture. Anne-Marie Duff wore a long-sleeved white maxidress by Temperley with transparent mesh panels to the navel.
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'Gone Girl' star Rosamund Pike ditched her usual short-dress look for a demure black halterneck gown by Roland Mouret.
Italian star Monica Bellucci played safe in a fully-covered black maxi gown by Alaia with bell sleeves and a ruffled hem.
Amy Adams wore her hair straight and sleek and opted for a floor length white gown by Lanvin.
Best actor winner Eddie Redmayne's wife Hannah Bagshawe glittered in a grey sequined dress while the Stephen Hawking-depictor looked dapper in a blue velvet suit.
Cumberbatch and his pregnant fiancee Sophie Hunter turned heads in their black outfits. The actor teamed up his tuxedo by Alexander McQueen with a midnight blue bow tie while Hunter opted a halterneck gown and diamond earings.