Lily Allen knows precisely where she was when she first realized her "Smile" single was taking off in the United Kingdom, where she was for most of the landmarks in her pop career: on the Internet.

"I was in America and Jo Whiley played it on Radio 1 back home," Allen says. "My MySpace [page] just went insane. It was first thing in the morning where I was but there were hundreds of comments and I thought, 'This is it now.' "

Since that moment, 21-year-old Allen has become the poster girl for social networking sites in the United Kingdom, reaching platinum status (300,000 units) for her Regal/Parlophone album, "Alright, Still," on the back of a hugely innovative digital campaign. And, with more than 97,000 MySpace friends, small wonder that the biggest cheer of the night on her last U.K. tour always came when she inquired: "Anyone here off MySpace?" Never mind the claims of Arctic Monkeys and Sandi Thom, Lily is the United Kingdom's first natural born digital superstar.

Click here to read the full story on Lily Allen's blitz on America -- including her online chatroom behavior, thoughts on Madonna and The Pussycat Dolls, and why MTV is backing her.