Curvy Kate Upton, 21, is famous for being a Vogue cover girl - and she played up her assets for the star-studded bash in a figure-hugging black fishtail frock, with a plunging neckline.
Model Kate looked stunning in the elegant black dress, with barely-there makeup and fuss-free hair.
Ireland Baldwin, meanwhile, showed off the model genes she's inherited from mum Kim Basinger, as she dared to bare in a daring white and black minidress.
The revealing dress looked stunning with her slicked-back blonde hair and bright red lips - though we're not sure what father Alec Baldwin would have made of 18-year-old Ireland's risque look!
Top marks for details, too - delicate strappy sandals and a simple black box clutch were the perfect understated accessories.
Not to be outdone, TV presenter and former model Tyra Banks hit the red carpet in a black lingerie-inspired dress, complete with sheer lace panels, to show off her pneumatic curves - adding a pair of pointed black courts with ankle cuffs to banish any suggestions she'd left the house in her underwear!
And we're in awe of Tyra's hair, complete with 60s-inspired beehive, which was almost as voluptuous as her figure. We want!
Who do you think looked best last night? Let us know in the comments box below - our favourite comment from across the site each week wins £50!