The singer-and-actress showed off her new slimline figure in a stunning floorlength gown by Atelier Versace and while it may have been too much for some women, Jennifer managed to pull it off.
Sandra Bullock - who won the Best Actress accolade at last year's ceremony - also stood out on the red carpet at Los Angeles' Kodak Theatre in a bright red strapless Vera Wang dress, which she chose because she wanted her 13-month-old son Louis to recognise her on TV.
She said: "I chose this Vera Wang gown because my son recognises the colour red, so I figured if he saw me on television he'd look at me instead of Gwyneth (Paltrow) or Nicole (Kidman), which is what usually happens."
She said of her choice: "I'm flying the flag to support British fashion. She just opened a store here in Los Angeles so I wanted to show everyone how beautiful her dresses are."
Penelope Cruz made her first red carpet appearance since the birth of son Leo last month by looking stunning in a sparkly maroon L'Wren Scott dress, while Halle Berry, Nicole Kidman and Michelle Williams opted for neutral and white shades.