
Heidi Pratt took Hills fans by storm with her nearly-naked Playboy spread, but she's not the only Hillzie lookin' to show off her curves. For the second time in two years, Lauren Conrad's on the cover of Shape magazine -- and her interview's almost as revealing as that orange string bikini she's wearin'!
According to Shape.com, LC knows exactly how settling down with someone can lead to unwanted weight gain. In fact, she even has a name for it! "I call it the 'boyfriend layer'," she tells the mag. "[Kyle and I] were having more romantic dinners out, and I was exercising less."
But where there's a will, there's a way. And, the way Lauren sees it, where there's a boyfriend, there's a built-in gym buddy! "I just ask Kyle, 'You feel like working out?'" says the Hills star. Her rationale? "It's way more fun than hitting the gym alone!"

(Photos: Shape.com)
+ Learn more about LC's fitness routine (and find out how she resists those pizza cravings!) by heading over to Shape.com.