Robin Williams, star of the film World's Greatest Dad, greets Mabel, a Boston Terrier featured in the film, at the film's premiere in Los Angeles, California August 13, 2009.

Brad Pitt arrives at the premiere of The Time Traveler's Wife in New York August 12, 2009.

Rachel McAdams arrives at the premiere of The Time Traveler's Wife in New York August 12, 2009.

Keanu Reeves (L) leaves from a restaurant at Zapallar town, some 181 km (121 miles) of Santiago, August 16, 2009.

Eric Bana and his wife Rebecca Gleeson arrive at the premiere of The Time Traveler's Wife in New York August 12, 2009.

Madonna performs during her Sticky and Sweet Tour concert in Munich August 18, 2009.

Hilary Duff waves during a ceremony to name her as youth ambassador at the Lievano palace in Bogota August 14, 2009.

Gael Garcia Bernal arrives for a screening of the film Inglourious Basterds in New York August 18, 2009.

Brad Pitt