Celebrity Sightings

Actor Brad Pitt attends the Moscow Premiere of 'World War Z' during the Moscow International Film Festival on June 20.

Singer Florence Welch attends the Hoping Foundation's 'Rock On' benefit evening for Palestinian refugee children at Cafe de Paris on June 20 in London.

Actor Russell Brand performs at the Hoping Foundation's 'Rock On' benefit evening for Palestinian refugee children at Cafe de Paris on June 20 in London.

Designer Stella McCartney, left, and Kate Moss attend the Hoping Foundation's 'Rock On' benefit evening for Palestinian refugee children at Cafe de Paris on June 20 in London.

KT Tunstall performs on stage at Islington Assembly Hall on June 20 in London.

Actresses Natalie Portman, left, and Reese Witherspoon attend Benjamin Millepied's L.A. Dance Project Inaugural Benefit Gala on June 20 in Los Angeles.

Actress Rashida Jones attends Benjamin Millepied's L.A. Dance Project Inaugural Benefit Gala on June 20 in Los Angeles.

Singer and actress Jennifer Lopez and boyfriend Casper Smart pose on her star after it was unveiled on the Walk of Fame in Hollywood on June 20.

Actress Jane Fonda attends the Jennifer Lopez Star on the Hollywood Walk Of Fame on June 20 in Hollywood.

Producer Forest Whitaker arrives at special screening of "Fruitvale Station" at The Grand Lake Theater on June 20 in Oakland, California.

Actress Ahna O'Reilly arrives at special screening of "Fruitvale Station" at The Grand Lake Theater on June 20 in Oakland, California.

Actress Octavia Spencer arrives at special screening of "Fruitvale Station" at The Grand Lake Theater on June 20 in Oakland, California.

Actress Meg Ryan attends the Taormina Filmfest 2013 on June 20 in Taormina, Italy.

Musician Seal attends the Leica Store Los Angeles grand opening on June 20 in Los Angeles.

Actress Marcia Cross attends the Leica Store Los Angeles grand opening on June 20 in Los Angeles.

Actor Peter Facinelli attends the Leica Store Los Angeles grand opening on June 20 in Los Angeles.

Actor John Travolta attends a special screening of "Killing Season" at the Sunshine Landmark Theater on June 20 in New York.

Actress Elizabeth Olin attends a special screening of "Killing Season" at the Sunshine Landmark Theater on June 20 in New York.

From left, Simon Cowell, Kelly Rowland, Paulina Rubio, and Demi Lovato attend "The X Factor" Judges press conference at Nassau Veterans Memorial Coliseum on June 20 in Uniondale, New York.

Actor Stephen Moyer attends the 10th annual BAFTA LA Student Film Awards at Los Angeles Film School on June 20.

Model Kendall Jenner celebrates the grand opening of New York City's Sugar Factory American Brasserie on June 20 in New York.

Singer Tallia Storm celebrates the grand opening of New York City's Sugar Factory American Brasserie on June 20 in New York.

From left, Nick Jonas, Joe Jonas and Kevin Jonas of the Jonas Brothers visit Music Choice's U&A at Music Choice on June 20 in New York.

Actress Katharine McPhee attends Feel The Taste celebrating The Summer Solstice at Beekman Beer Garden Beach Club on June 20 in New York.

David Beckham is surrounded by fans as he visits Tongji University on June 20 in Shanghai, China.

From left, ballerina Sofia Arzhakovskaya and Christian Slater attend the Moscow International Film Festival on opening night at Pushkinsky Cinema on June 20.

Singer and actress Barbra Streisand performs during her concert at Bloomfield Stadium in Tel Aviv June 20. Streisand performed for the first time ever in Israel.

Singer Lou Reed attends the Grey Group Seminar during the Cannes Lions International Festival of Creativity at Palais des Festivals on June 20 in Cannes, France.

Lexi and Harley join their mom, Julianne Hough, to celebrate the Purina #PetsAtWork campaign June 20 in Burbank, California.

Actor Brad Pitt walks with his daughters Shiloh, right, and Zahara near the Kremlin in Moscow on June 20.