VIDEO: Ronda Rousey's body-paint session for SI Swimsuit Issue

Sports Illustrated has released a behind-the-scenes video of cover girl Ronda Rousey's transformation from cage fighter to body-painted beauty.

"I can assure you that I have no clothes on," Rousey says. "I have not worn a bra for a long time now. I think this is the longest I've just walked around naked since I was like 10."

Rousey heaps praise upon body-paint artist Joanne Gair, emphasizing the extraordinary work that went into her "swimsuit."

Joining Rousey in the clip are Olympic ski champ Lindsey Vonn and former No. 1-ranked tennis pro Caroline Wozniacki.