We can't all have Heidi Klum's genes, but we can look just as good in our skinny jeans! Photo: Stephen Lovekin, Getty Images

Skinny jeans might be popular, but for many, they bring with them an unpopular side effect -- some extra pudge coming up over the top of those jeans.

A new workout is designed to change all that. The Skinny Jeans Workout, according to CNN, "concentrates on core muscles, balance and posture. A cross between ballet, butt-burning stretches and light weight lifting, the workout involves the entire body." Basically, everything that goes into the jeans (booty, thighs) or affects how you fit in the jeans (abs, back, shoulders) is worked, and those who attend the class regularly swear by it.

Class instructor Tracy Cherpeski Bannister told CNN, "In addition to sort of holding it in, we're also lifting and lengthening and, as we do that, we sort of set our shoulders into place." Hey, good posture makes everybody look 10 pounds slimmer, so it only makes sense that working on muscles that help posture would get you into some smaller, skinnier jeans.

Working core muscles and posture is a great way to combat the effects of rounding ones shoulders while driving or, ahem, hunching over a computer keyboard all day, even if you're not trying to fit into skinny jeans. Does your gym offer the Skinny Jeans Workout?