Katy Perry speaks during an appearance on NBC's "Today" show in New York. Perry recently released her second album, "Teenage Dream."
Bill Cosby speaks on stage during a rally at Hart Plaza in Detroit. The Rev. Jesse Jackson and Cosby attended the rally to stir up excitement about going back to school.
Actress Jerry Hall and actor Rider Strong rehearse for a stage play adaptation of "The Graduate" at His Majesty's Theatre in Perth, Australia.
Paul Kane-Getty Images
Tennis players Martina Navratilova and Chris Evert attend the premiere of ESPN Films' documentary "Unmatched" at Tribeca Cinemas in New York City.
Jason Kempin-Getty Images
Bianca Jagger, former wife of Rolling Stones singer Mick, and Thadeus Ropac arrive for the Pakistan Benefit Concert at Haus für Mozart concert hall in Salzburg, Austria.
Johannes Simon-Getty Images
Celebrity AIDS Activist Suzanne "Africa" Engo arrives at Bloomingdale's Fashionable Fundraiser to shop in support of AMFAR in New York City.
Neilson Barnard-Getty Images for AMFAR
Chris Brown appears at a hearing with his attorney, Mark Geragos, in Los Angeles. A judge said Thursday, Brown is doing a "great job" completing the terms of his probation after pleading guilty to assaulting ex-girlfriend Rihanna.
Singer Vita Chambers arrives at J-14 Magazine's Intune: Rocks concert at the Hard Rock Cafe in New York.
From left, Steve Koscuisko, Ned Goldman, Collin MacGregor and Steve Kowalski from the band Comic Book Heroes arrive at J-14 Magazine's Intune: Rocks concert.
Jessica Alba and actor Danny Trejo arrive at the Los Angeles screening of "Machete" at the Orpheum Theatre in Los Angeles.
Jason Merritt-Getty Images
U2 lead singer Bono performs under heavy rain during the band's show at the Luzhniki stadium in Moscow.
Alexander Blotnitsky-AFP/Getty Images
Actor Bradley Cooper poses with young New York area tennis players during the Nike Primetime Knockout tennis event to celebrate the season's final Grand Slam tournament. Cooper was a special guest and paired with Maria Sharapova during the exhibition doubles match.
Singer Ke$ha celebrates the end of her tour with dinner at Sunda Asian in Chicago.
Barry Brecheisen-Getty Images
Amy Winehouse waits on a balcony before The Libertines performed at the Forum in London.
Ian Gavan-Getty Images
Billy Corgan, from the Smashing Pumpkins, gestures during a press conference in Mexico City.
Ronaldo Schemidt-AFP/Getty Images
Musician Neil Giraldo and singer Pat Benetar perform at the Nokia Theatre in New York City.
Stephen Lovekin-Getty Images
Carlos Santana performs on stage at the Joint at the Hard Rock Hotel and Casino in Las Vegas.
Cast member Ashley Bell and producer Eli Roth attend the premiere of "The Last Exorcism" in Hollywood. The movie opens in the U.S. on Aug. 27.
Cast member Patrick Fabian and his wife Mandy pose at the premiere of "The Last Exorcism."
Adrian Grenier poses in a hotel room as he promotes his new film "Teenage Paparazzo" in Toronto.
Actors Morgan Freeman and Ted Danson talk on the deck of the Oceana Latitude in Gulfport, Miss., after a news conference with Nautica and advocacy group Oceana to discuss a two-month research trip to study the effects of the BP oil spill in the Gulf of Mexico.
David Hasselhoff poses for the media as he arrives at a news conference to promote his autobiography in Berlin.
From left, British actress Gemma Jones, Woody Allen and actress Lucy Punch attend the "You Will Meet a Tall Dark Stranger" photocall in Gijon, Spain. Allen says he began shooting movies in European cities because he could no longer afford to do it in New York.
Miss Universe 2010 Jimena Navarrete poses for photographers poolside at the Bellagio Resort and Casino in Las Vegas.
Matt Petit-AFP/Getty Images
Russian President Dmitry Medvedev hosts Bono, the lead singer of Irish band U2, in the Bocharov Ruchei residence near Russia's Black Sea resort of Sochi. The Russian president, a well-known fan of British rock groups Deep Purple and Black Sabbath, chatted in English with Bono, whose band plays its first-ever concert in Russia on Wednesday.
Fantasia Barrino poses for a portrait at Print restaurant in New York. The singer, who recently released her new album "Back to Me," told VH1's "Behind the Music" that her recent overdose on sleeping pills and aspirin was a suicide attempt.
Justin Long looks on as fellow "Going the Distance" cast member and on again, off again girlfriend Drew Barrymore poses for photographers at the premiere of the film in Los Angeles.
Christina Applegate and her fiance Martyn LeNoble pose together at the premiere of "Going the Distance" in Los Angeles. The couple is expecting their first child together.
Actress Kelli Garner arrives at the premiere of "Going the Distance" in Los Angeles.
Robyn Beck-AFP/Getty Images
Jane Seymour arrives at the 2010 Miss Universe Pageant at the Mandalay Bay Events Center in Las Vegas.
Ethan Miller-Getty Images
Miss Mexico Jimena Navarrete competes in the evening gown competition during the Miss Universe pageant. Navarrete was later crowned Miss Universe 2010.
Musician John Legend performs during the Miss Universe pageant.
U.S director Martin Scorsese talks with an unidentified assistant during the filming of "Hugo Cabret" in Paris.
British singer George Michael arrives at Highbury Corner Magistrates Court in north London for his hearing regarding charges of driving under the influence of drugs after he smashed his car into a high street shop. Michael, 47, whose real name is Georgios Panayiotou, pleaded guilty to drug offenses and a judge suspended his license and warned him he could face jail.
Actor John Cho attends the 8th Annual Ivy Bethune Tri-Union Diversity Awards in Burbank, Calif.
Alberto E. Rodriguez-Getty Images
Actress Dawnn Lewis attends the 8th Annual Ivy Bethune Tri-Union Diversity Awards.
Alberto E. Rodriguez-Getty Images
Lily Tomlin, left, and Kathryn Joosten arrive at the Creative Arts Emmy Awards in Los Angeles. Tomlin and Joosten both star on ABC's "Desperate Housewives."
Actress Ann-Margret holds her Emmy award for outstanding guest actress in a drama series for "Law & Order: Special Victims Unit" at the Creative Arts Emmy Awards.
John Lithgow poses with the award for outstanding guest actor in a drama series for "Dexter" in the press room at the Creative Arts Emmy Awards.
Actor Neil Patrick Harris holds his Emmy awards for outstanding guest actor in a comedy series and outstanding special class programs at the Creative Arts Emmy Awards. Harris was also a presenter at the event.
Billy Idol and bassist Stephen McGrath perform at the Pearl concert theater at the Palms Casino Resort in Las Vegas.
Ethan Miller-Getty Images
Charles Kelley, Dave Haywood and Hillary Scott of Lady Antebellum perform at the Darke County Fair in Greenville, Ohio.
Jay Leno jokes with Rich Westfall, president of Gulf Coast Community Foundation, about the money raised by Leno's benefit concert for Mississippi oil spill victims at the Beau Rivage Resort & Casino in Biloxi, Miss.
Leno said after looking at the over $90,000 collected in ticket sales, that he would contribute $10,000 to raise the amount to $100,000.
Rogelio V. Solis-AP
Singer Chris Daughtry performs with his band Daughtry on NBC's "Today" show in New York.
Bono, lead singer of U2, performs during the band's 360 Degree Tour in Olympic Stadium in Helsinki.
Angelina Jolie shakes hands with Zeljko Komsic, Croat member of the Tripartite Bosnian Presidency, during her visit to Sarajevo. Jolie will direct her first movie which will be shot in Bosnia.
Members of the band a-ha perform during their farewell concert at Ullevaal Stadion in Oslo.
Photo Editor Dan Murano