Well if I'm looking like that after a baby I wouldn't be complaining to be honest .... on the cover however I think it's just the swimmer bottoms and the way they're positioned.
She's kinda more eh in the midsection looking at it from just "looking at a model" point of view - but then take into account she's popped a human out of it an DAMN. but yeah, I don't think she's looking her best there, although it is an awesome shoot! The colors and close ups on her face just (the sunglasses pic is your next ad Michael Kors) and how fun would it be to shoot underwater wearing heels... ya ok well that's my kind of fun lol...