Paparazzi photos from Thursday, May 19

Ali Larter shopping in West Hollywood (pics start here)

Colin Firth and Cameron Diaz filming Gambit at Heathrow airport in London (pics start here)

Emmanuelle Chriqui at the UNICEF "Playlist with The A-List" Karaoke event held at the El Rey Theatre in L.A. (pics start here)

Irina Shayk at the Replay party during the 64th Annual Cannes Film Festival in France (pics start here)

Christina Ricci shopping in West Hollywood (pics start here)

Kate Bosworth heading to an art class at Katie O'Neill's Fine Art Studio in Pacific Palisades (pics start here)

Rose McGowan out and about in Studio City (pics start here)

Rachel McAdams at a screening of Midnight in Paris at the Tribeca Grand Screening Room in New York (pics start here)

Calista Flockhart out and about in Brentwood (pics start here)

Kat Dennings at Philadelphia Style magazine's 12th anniversary party at SugarHouse Casino in Philadelphia (pics start here)

Alessandra Ambrosio, husband Jamie Mazur, and their daughter Anja at the Brentwood Country Mart (pics start here)

Penelope Cruz at the Spanish premiere of Pirates of the Caribbean: On Stranger Tides in Madrid (pics start here)

Selma Blair out and about in Studio City (pics start here)

*113 paparazzi pictures total in the gallery:

[Flynet, WENN, Pacific Coast News]