Always popular with the Hollywood crowd, the stars were out in full force at the 2010 Coachella Valley Music and Arts Festival in Indio, California on Friday (April 16).

Turning up for the annual event on the first day of action were Tinseltown cuties such as Whitney Port, Camilla Belle and Drea de Matteo, as well as singers John Mayer, Katy Perry and Pink and cute couple Kelly Osbourne and Luke Worrall.

Now that the whole world knows that John Mayer enjoyed his sexual escapades with Jessica Simpson, the “Come on Over” songstress is trying to deal with the embarrassment.

During her interview on “The Oprah Winfrey Show,” Ms. Simpson said she’s more disappointed with the “No Such Thing” singer than anything else.

It’s no secret that John Mayer dished on his sexual escapades with Jessica Simpson in his recent interview with Playboy magazine, and Jessica’s dad couldn’t be more upset.

Joe Simpson reportedly called the “No Such Thing” crooner to give him a piece of his mind after hearing the things Mayer said about Jess.