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Kelly Osbourne is giving Christina Hendricks a run for her money!

The "Fashion Police" star hit the black carpet at The Black Diamond Affair Presented By Azature last night at Sunset Tower in Los Angeles -- where all eyes were on her ample cleavage.

The 28-year-old slipped into an extremely low-cut black dress for the event, which she attended with fiance Matthew Mosshart (right).

This is definitely one of the sexier outfits Kelly has sported since losing weight -- but do you like the look?

And while she looked pretty good on the carpet, Osbourne was actually nursing a sprained jaw after an accident with her dog!

On Tuesday, she tweeted:

Here's to a speedy recovery!

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