Simon Cowell has spoken out about the rumors swirling regarding who will replace him as a judge on the next season of American Idol. Stars including shock jock Howard Stern, Elton John, Jamie Foxx and Madonna have been suggested, but Simon doesn't think any of them are right for the job. "I know Howard's name has been in there for a while, but I'm fairly certain that there hasn't been an approach at any time for Howard to do this show," says Simon. "My advice would be to find somebody who actually knows what they're talking about and has actually experienced success in the music business," he adds. But he does believe that blogger Perez Hilton could do the job, and he'd love singing sensation Lady Gaga to be a mentor. "I think we should have Lady Gaga. She is the most relevant pop artist in the world at the moment. I met her and she's very smart. I like her," he adds.