Talk about body after baby -- Pink graces the cover of the new issue of Shape magazine, and the abs she's showing off are so amazing that it's hard to believe she gained 55 pounds during her pregnancy.   "To be on the cover, especially now, in my life, is a huge deal," says the singer, whose daughter Willow is now 18 months old.  "I didn't know if I would ever be back in shape."

In this video she talks about what she had to do to get in such great shape.