What baby?

You'd never believe Chrissy Teigen gave birth to her adorable baby girl Luna just last April, but honey, this is what supermodel, post-baby bod looks like and Sports Illustrated is all over it!

The 31-year-old says of the sexy shoot: "I haven’t shot since baby. But of course you know that ... everyone at Sports Illustrated in general is going to embrace your body no matter what’s happening and embrace the changes."

Teigen has appeared in every SI issue since 2010 but even though it's old hat for her, Chrissy says in this behind-the-scenes video: "I forgot how stupidly painful it is to just pop your ass all day."