Celebrity Sightings

Steve Martin attends "Backstage at the Geffen" in Los Angeles on March 22.

Jon Hamm and Vincent Kartheiser on stage at The Paley Center For Media's PaleyFest 2014 Honoring "Mad Men" at Dolby Theatre in Hollywood, Calif., on March 21.

Kiernan Shipka arrives at The Paley Center For Media's PaleyFest 2014 Honoring "Mad Men" at Dolby Theatre in Hollywood, Calif., on March 21.

Jessica Pare arrives at The Paley Center For Media's PaleyFest 2014 Honoring "Mad Men" at the Dolby Theatre in Hollywood, Calif., on March 21.

Elisabeth Moss arrives at The Paley Center For Media's PaleyFest 2014 Honoring "Mad Men" at Dolby Theatre in Hollywood, Calif., on March 21.

Anne Hathaway poses with a bird during the Miami Walk Of Fame inauguration at Bayside Marketplace in Miami on March 21.

Tracy Morgan attends the 'Rio 2' Premiere at Fontainebleau Miami Beach in Miami Beach, Fla., on March 21.

George Lopez attends the 'Rio 2' Premiere at Fontainebleau Miami Beach in Miami Beach, Fla., on March 21.

Janelle Monae attends the 'Rio 2' Premiere at Fontainebleau Miami Beach in Miami Beach, Fla., on March 21.

Kate Upton is seen walking in Soho in New York on March 21.

Russell Crowe attends the photocall of "Noah" at the the Fasano Hotel in Rio de Janeiro on March 21.

Emma Roberts is seen in Los Angeles on March 21.

Maggie Gyllenhaal is seen in New York on March 21.

Bruce Willis and Emma Heming are seen in Los Angeles on March 21.

Courteney Cox attends an Evening of Environmental Excellence presented by The UCLA Institute Of The Environment And Sustainability at Private Residence in Los Angeles on March 21.

Kristen Stewart filming on location for "Still Alice" at Lido Beach, N.Y., on March 21.

Dominic Monaghan attends the BBC America Wild Things with Dominic Monaghan season two premiere screening at the Los Angeles Zoo in Los Angeles on March 22.

Johnny Depp and Amber Heard are seen in New York on March 22.

Peter Dinklage is seen in New York on March 22.

Yoko Ono performs at Cafe OTO in London on March 22.

Christina Hendricks attends Disney's "The Pirate Fairy" World Premiere at Walt Disney Studios in Burbank, Calif., on March 22.

Mae Whitman attends the premiere of DisneyToon Studios' "The Pirate Fairy" at Walt Disney Studios in Burbank, Calif., on March 22.

Madonna is seen in New York on March 22.

Marlon Wayans introduces SWV at Howard Theater in Washington on March 23.

Matthew McConaughey is seen in Los Angeles on March 22.

Mila Kunis and Ashton Kutcher attend a basketball between the Detroit Pistons and the Los Angeles Clippers at Staples Center in Los Angeles on March 22.

Miley Cyrus performs at AmericanAirlines Arena in Miami on March 22.

Jesse Tyler Ferguson speaks during the Human Rights Campaign Los Angeles Gala Dinner at JW Marriott Los Angeles at L.A. LIVE in Los Angeles on March 22.

Sophia Bush attends the book signing for Adam Braun's new book "The Promise Of A Pencil" at Barnes & Noble bookstore at The Grove in Los Angeles on March 23.

Lionel Richie is seen upon arrival at Narita International Airport in Narita, Japan on March 24.

Lady Gaga visits the SiriusXM Studios in New York on March 21.

Anna Kendrick arrives at Backstage At The Geffen Gala in Los Angeles on March 22.

Samuel L. Jackson attends a publicity event ahead of the April release of his movie "Captain America: The Winter Soldier" in Beijing on March 24.

Scarlett Johansson talks to journalists during a publicity event ahead of the April release of the movie "Captain America: The Winter Soldier" in Beijing on March 24.

Elizabeth Henstridge and Clark Gregg arrive at PaleyFest 2014 "Marvel's Agents of S.H.I.E.L.D." in Los Angeles on March 23.