In case you were wondering how Kim Kardashian gets her butt to look so plump, she does it by using Sketchers "Shape-Ups." Or so she'd have you believe, if you pay attention to Sketchers ads. She recently shot a new ad and, ya'know, did that sexy Kardashian thing she does. Where she smiles, shows off her body, stuff like that. It works, though. Are you running out to get your Sketchers yet?