UNICEF Ball honouring

Angelina Jolie and Brad Pitt speak to Martin Kove at the UNICEF Ball honoring producer Jerry Weintraub in Beverly Hills, California on Thursday, December 10, 2009.  (AP/Matt Sayles)

Selena Gomez arrives at the UNICEF Ball honoring producer Jerry Weintraub in Beverly Hills, California on Thursday, December 10, 2009.  (AP/Matt Sayles)

Alyssa Milano arrives at the UNICEF Ball honoring producer Jerry Weintraub in Beverly Hills, California on Thursday, December 10, 2009.  (AP/Matt Sayles)

Cindy Crawford arrives at the UNICEF Ball honoring producer Jerry Weintraub in Beverly Hills, California on Thursday, December 10, 2009.  (AP/Matt Sayles)

Brad Pitt arrives at the UNICEF Ball honoring producer Jerry Weintraub in Beverly Hills, California on Thursday, December 10, 2009.  (AP/Matt Sayles)

Actor Bruce Willis speaks at the UNICEF Ball honoring producer Jerry Weintraub in Beverly Hills, California, December 10, 2009.  (REUTERS/Fred Prouser)

Brad Pitt and Angelina Jolie attend the UNICEF Ball honoring producer Jerry Weintraub in Beverly Hills, California, December 10, 2009.  (REUTERS/Fred Prouser)

Actor George Clooney speaks at the UNICEF Ball honoring producer Jerry Weintraub in Beverly Hills, California, December 10, 2009.  (REUTERS/Fred Prouser)

David Foster arrives at the UNICEF Ball held at the Beverly Wilshire Hotel on December 10, 2009 in Beverly Hills, California.  (REUTERS/Jason Merritt)

Actor Jeremy Piven arrives at the UNICEF Ball held at the Beverly Wilshire Hotel on December 10, 2009 in Beverly Hills, California.  (REUTERS/Jason Merritt)

George Clooney and Jerry Weintraub arrive at the UNICEF Ball held at the Beverly Wilshire Hotel on December 10, 2009 in Beverly Hills, California (REUTERS/Jason Merritt)

Cindy Crawford arrives at the UNICEF Ball held at the Beverly Wilshire Hotel on December 10, 2009 in Beverly Hills, California.  (REUTERS/Jason Merritt)

Matt Damon arrives at the UNICEF Ball held at the Beverly Wilshire Hotel on December 10, 2009 in Beverly Hills, California.  (AFP/Jason Merritt)

Bruce Willis and Emma Heming arrive at the UNICEF Ball held at the Beverly Wilshire Hotel on December 10, 2009 in Beverly Hills, California.  (AFP/Jason Merritt)

Actress Alyssa Milano arrives at the UNICEF Ball held at the Beverly Wilshire Hotel on December 10, 2009 in Beverly Hills, California.  (REUTERS/Jason Merritt)

Actor George Clooney arrives at the UNICEF Ball held at the Beverly Wilshire Hotel on December 10, 2009 in Beverly Hills, California.  (AFP/Jason Merritt)