The Hills

Lauren Conrad turned up inside the Ed Sullivan Theater on Tuesday, where The Hills star and aspiring fashion designer chatted up David Letterman.

The pair talked about what Lauren Conrad was like as a child.

LC said: "Our house was in Orange County. The back was a huge canyon, and I was a really big tomboy when I was little. I'd always go hiking and I had a rock collection. And I'd come back up and... you get ticks! They're gross!"

Lauren Conrad also revealed that she is taking a computer class at the FIDM with none other than Stephanie Pratt! Drama! David Letterman also referred to the other Pratt - Spencer - as a new, which was a pretty funny moment.

Check out the video HERE!