Not only did these four famous women -- Jessica Biel, Olivia Munn, Christina Aguilera, and Lena Dunham -- wear the best dresses at the Time 100 Gala in NYC on Apr. 23, they arguably never looked better! And that says a lot, considering all of them are red carpet veterans.

Actress Biel, who was on hand to celebrate with husband and Time 100 honoree Justin Timberlake, wowed in a black Tom Ford dress with asymmetrical lines and Tom Ford heels. The couple were a walking billboard for Tom Ford, in fact: Timberlake donned a shawl-collared tux by the designer as well.

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Newsroom star Munn, who, incidentally, was once linked to man of the hour Timberlake, turned heads in a canary yellow lace Michael Kors strapless gown with a dramatic train. Her date? None other than the designer himself Michael Kors, an honoree. Besides a single gold cuff, her only accessory was her gorgeous glow.

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Aguilera, an honoree at the event, has slimmed down recently and the singer showed off her toned body in a figure-hugging Victoria Beckham gown with a modest keyhole cutout. Diamonds -- and a pop of bright red on her lips -- added oomph to her otherwise understated look.

Girls creator and star Dunham, also on the Time 100 list, looked chic and adorable in a Saint Laurent halter dress with plunging neckline. A silver spiked belt and T-strap pointy heels, also by Saint Laurent, gave the look a little edge.

Tell Us: Who do you think was best-dressed at the event?

This article originally appeared on Jessica Biel, Olivia Munn: Who Was Best-Dressed at the Time 100 Gala?