The 12 Years a Slave star chose a high-necked black and white dress from the French fashion house's autumn 2014 collection that was covered in multi-coloured sequins.
She complimented the fashion-forward frock with bright blue pointed toe heels by Casadei and silver glittery eyeshadow.
Also impressing was Jessica Alba, who went for a youthful white bandeau top which she paired with a voluminous lime high-waisted skirt. Pointy printed heels, an oversized clutch and curly blow-dry finished off the look.
The stars of The Other Woman, Leslie Mann, Cameron Diaz and Kate Upton, also upped the ante style-wise in a trio of monochrome looks. Mann chose a floaty spotty dress with a waterfall hemline which revealed orange strappy heels. Diaz went for a strapless black top, white pencil skirt and gladiator heels, while Upton went for a simple LBD which was complimented by mega gold and black sandals.
Meanwhile, rapper Nicki Minaj, who appeared on stage with the actresses, looked fantastic in a figure-hugging Alexander McQueen black maxi dress and layered gold cuffs.
Divergent star Shailene Woodley chose a fierce green leather dress from Balmain, which featured cut-out detailing at the midriff and a pleated skirt.
Rita Ora looked chic in a plunging neckline black satin gown which had pockets and a simple silhouette. Classic red lipstick and loose waves gave the look an old Hollywood feel.
Rihanna vamped it up in a sheer white ensemble, which consisted of a flowing robe worn over a racy bodysuit.
Ellie Goulding looked angelic in a white floor-sweeper which had cut-out detailing at the sides.
Iggy Azealea wore a gorgeous baby pink John Galliano frock and statement wedges.