When Mariah Carey joked about her cleavage at last night's Out 100 Awards, she wasn't joking.

The 43-year-old singer put her girls front and center in a black corset dress that really accentuated her killer curves.

Carey, who appeared at the event to accept an award for "Precious" director Lee Daniels, commented about her sexy style during her speech -- telling the crowd, "I'm a straight girl. I don't really know why they asked me to be here but my boobs have been out for years!"

And clearly, they show no sign of going back in.

Before she hit the stage, Mimi tweeted out a photo of her getting ready with her daughter Monroe, who was seen waving her mom's fan in a cute pink Cinderella dress. Is she a little diva in training?!

What do you think of Mariah's boob-tastic gown? Does she still pull it off at 43?

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