Photos of the Week: Adam Lambert, Katy Perry, Jay-Z

Singer Katy Perry (L) and musician Adam Lambert arrive at the premiere of Sony Pictures' "This Is It" held at Nokia Theatre Downtown LA on October 27, 2009 in Los Angeles, California.

Jay-Z shows off his turntable skills at a press conference announcing the launch of DJ Hero in New York on October 26.

A selection of costumes intended to be worn by Michael Jackson during his 'This Is It' concerts went on display, with other memorabilia, at London's 02 Arena on Oct. 26.

Gwen Stefani performs with No Doubt at the 23rd Annual Bridge School Benefit in Mountainview, CA on Oct. 24.

'Idol' champ Kris Allen gets friendly with some of Miami's finest at Land Shark Stadium, where he performed at a Dolphin's tailgate party on Oct. 23.

Chris Brown gets down and dirty during a performance at Power 105.1's Powerhouse concert in East Rutherford, New Jersey on Oct. 27.

Singer Marc Anthony performs at American Airlines Arena on October 24, 2009 in Miami, Florida.

Lionel Richie greets enthusiastic fans outside of the Tokyo premiere of Michael Jackson's 'This Is It' on October 28.

Country hunk Tim McGraw howls for the crowd in New York's Rockefeller Center during a performance for NBC's 'Today' show on Oct. 23

Coldplay's Chris Martin performs a rare solo set at the 23rd Annual Bridge School Benefit in Mountainview, CA on Oct. 24.

Quincy Jones, left, and Chris "Ludacris" Bridges pose for a photo on the red carpet at The Ludacris Foundation's 6th Annual Benefit Dinner on October 24, 2009 in Washington, DC.

Prince protégé Shelia E. arrives at camp Ronald McDonald for the 17th annual Halloween Carnival at L.A.'s Universal Studios on Oct. 25.

Kid Cudi, actor Mark Wahlberg and Akon share style tips at the 2009 GQ Gentlemen's Ball 2009 at the Edison Ballroom in New York City on Oct. 28.

Emma "Baby" Bunton congratulates fellow Spice Girl Melanie "Sporty" Chisholm as she celebrates her first night as part of the 'Blood Brothers' play cast in London on Oct. 26

Kevin Jonas, Joe Jonas and Nick Jonas of Jonas Brothers attend a Press Conference on October 25, 2009 in Santo Domingo, Dominican Republic.

Billboard fan Daniel Erhart shot this photo of Carrie Underwood performing at the Mohegan Sun Arena in Uncasville, CT on Jan. 31, 2008. Next week's fan photo could be yours!