Halle Berry reveals how she keeps her 48-year-old ta-tas looking decades younger

So the secret to Halle Berry's firm upper body has finally been revealed.

The 48-year-old actress is partnering with Scandale Paris for her new lingerie collection, and she's underscored just how important a certain undergarment is to her physical upkeep.

"It's something I've always loved, I mean I have worn a bra and slept in a bra, probably TMI, since I was 16 years old," she said. "My mother taught me the importance of that and taking care of my body on that end, so lingerie and undergarments have been really important to me."

Sounds like Halle has experienced some pretty uncomfortable nights. But considering that she's been making hottest-body lists for decades now, it's all been for an excellent cause.

"It is because I wear these things all the time," she says of her ongoing perkiness. "If you don't want your boobs on your knees, it's very important."

Watch the video below to see Halle's having a funny bra moment with Ellen Degeneres.