Halle Berry showed off her killer stomach last night at the annual FiFi Awards -- where she won big!

Wearing a sexy black cut-out dress, Halle attended the NYC event honoring perfume on Wednesday ... looking absolutely stunning as she went on stage to accept her Celebrity Fragrance of the Year trophy for her perfume Reveal.

Halle wasn't the only star to go home with an award in her hand: Fergie, who glowed in a yellow Grecian gown, picked up a trophy for New Fragrance Celebrity of the Year.

Mary J. Blige also nabbed two awards for her My Life scent, including Fragrance of the Year and Sales Breakthrough.

Ah the sweet smell of success!

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