Holly Madison Behind-the-Scenes at Her OK! Cover Shoot

Holly Madison was shocked to discover that she was losing the battle of the bulge after working for so long to maintain her Playboy body.

She packed on 20 pounds last year and woke up one day realizing that she needed to do something about it — fast. 

1. OK! NEWS: HUGH HEFNER GETS LOVE FROM KENDRA WILKINSON & HOLLY MADISON AFTER CRYSTAL HARRIS HEARTBREAK

After using the supplement NV to lose weight, Holly says, "being able to lose a jean size in just two weeks made me feel really good about myself."

Go behind-the-scenes at Holly's OK! shoot where she shows off her hot new body and talks about her favorite body part now!

OK! NEWS: HOLLY MADISON KEEPS HER EYE ON THE PIE

And for more on Holly's battle to lose weight, be sure and pick up the new issue of OK!.