Vicki Gunvalson Credit: Charles Sykes/Bravo/NBCU Photo Bank/Getty Images; Chris McPherson/NBC/NBCU Photo Bank/Getty Images

Here's another reason for Vicki Gunvalson to shout "woo-hoo!" The Real Housewives of Orange County star, 51, revealed her subtly revamped new face on Monday's Watch What Happens Live -- and in the new issue of Us Weekly, which hits stands this Friday.

"I've always felt like I'm not pretty enough," the divorced mother of two tells Us Weekly. The insurance-agency owner says her ego was bruised when costar (and Gretchen Rossi's) called her Miss Piggy during a comedy performance last season. "It really hurt -- off-camera, I cried," Gunvalson admits.

Thus motivated, Gunvalson, who has had two breast augmentations, took action. Leavings kids Briana and Michael out of the loop, she had a plastic surgeon (one recommended by costar Alexis Bellino) inject her body fat into her face to erase wrinkles, thin her nose and insert a cheek implant.

"I'm still numb -- it'll take a year to fully heal," she tells Us. "But it didn't change me inside!"