After the birth of her now-4-year-old twins, Max and Emme, Jennifer Lopez, 41, noticed her feet weren't quite the same. "I was surprised that my feet went up a size," she told OK! Magazine. "I was like, 'What am I going to do with all these great shoes? They went back, almost, but not all the way. It's just like your ribs. Like, I used to fit into the sample size, now they have to open up the hips a little bit for me."