Janet Jackson on stage in Copenhagen, Denmark. (AP Photo/POLFOTO, Benjamin Kuerstein)
Lady Gaga performs during the 2011 MuchMusic Video Awards in Toronto. (AP Photo/The Canadian Press, Darren Calabrese)
Justin Bieber and girlfriend Selena Gomez stand on stage during the MuchMusic Video Awards. (AP Photo/The Canadian Press, Darren Calabrese)
Miley Cyrus gestures during a press conference in suburban Makati, south of Manila, Philippines before a concert. (AP Photo/Aaron Favila)
Jon Bon Jovi in concert in Horsens, Denmark. (AP Photo/POLFOTO, Anders Brohus)
Richard Gere, left, listens to monk Sung Jin during a visit to Chogye temple in Seoul. Gere was in South Korea to promote his photo exhibition and tour Buddhist temples. (AP Photo/ Lee Jin-man, Pool)
Ashton Kutcher wears a creation from the Colcci Summer 2012 collection at Sao Paulo Fashion Week in Sao Paulo, Brazil. AP Photo/Andre Penner)
George Clinton performs during his concert in Prague, Czech Republic. (AP Photo,CTK/Michal Dolezal)
Alyssa Campanella, Miss California, is crowned as the 2011 Miss USA by Miss USA 2010 Rima Fakih, in Las Vegas. (AP Photo/Julie Jacobson)
The quarterfinalists stand at the end of the swimsuit competition during the Miss USA pageant. (AP Photo/Julie Jacobson)