Celebrity Sightings

Chris Brown and Tyga attend a toy drive, Woody Allen croons with his jazz band, and more.

Rapper 2 Chainz performs during the 4th annual Street Execs Christmas Concert at The Tabernacle in Atlanta on Dec. 23. Marcus Ingram / Getty Images
Johnny Knoxville is seen in Los Angeles on Dec. 23. Pixplus/bauer-griffin / Getty Images
Woody Allen performs with his New Orleans Jazz band at Royce Hall at UCLA in Westwood, Calif. on Dec. 23. Mark Davis / Getty Images
Comedian Kevin Hart, singer Chris Brown, and rapper Tyga attend the 1st Annual Xmas Toy Drive hosted by Chris Brown and Brooklyn Projects in Los Angeles on Dec. 23. Imeh Akpanudosen / Getty Images
Actor Keanu Reeves speaks about his latest film "47 Ronin" in an appearance on the TODAY Show in New York on Dec. 23. Peter Kramer / Getty Images
Mariah Carey and Andy Cohen talk during an episode of Watch What Happens Live in New York on Dec. 23. Bravo / Getty Images
Actor Alan Cumming and producer Jean Doumanian attend a special screening of The Weinstein Company's August: Osage County at Paris Theatre in New York on Dec. 23. Bryan Bedder / Getty Images
Actor Jack Black dances with 24th Street Theatre Artistic Director and Jack Black's former teacher Debbie Devine at the "Thank A Million Teachers" event in West Hollywood, Calif. on Dec. 23. David Livingston / Getty Images
Actor Adam Scott waves to fans in New York on Dec. 23. Ray Tamarra / Getty Images