The ladies of The Hills got sassy in their undies for the cover of the latest issue of Rolling Stone, but they had some clothed fun, too. It's refreshing to see the ever-so-stylish girls kickin it casual in basics and to no surprise, Heidi sexed it up as much as possible. She and Lauren may have kept it civil for the day, but we have a feeling that Spencer may have helped inspire LC's disgruntled princess face.