Paparazzi photos from Thursday, July 26

Mischa Barton waiting for a tow truck in Ibiza, Spain (pics start here)

Keira Knightley and Mark Ruffalo on the set of Can a Song Save Your Life? in New York (pics start here)

Rihanna on a yacht off St. Tropez (pics start here)

Vanessa Hudgens and Austin Butler arriving at LAX airport (pics start here)

Emmy Rossum on the set of Shameless in L.A. (pics start here)

Halle Berry on the set of The Hive (pics start here)

Meg Ryan and John Mellencamp on their way to lunch in West Hollywood (pics start here)

Sarah Michelle Gellar shopping at Trader Joe's in Westwood (pics start here)

Ashlee Simpson and her boyfriend Vincent Piazza out and about in New York (pics start here)

Jessica Biel out and about in West Hollywood (pics start here)

Ashley Tisdale leaving a meeting in West Hollywood (pics start here)

Kristen Bell and Dax Shepard at a screening of Hit and Run in New York (pics start here)

Olivia Munn outside NBC studios in New York (pics start here)

Kate Bosworth and Michael Polish leaving M Cafe de Chaya in West Hollywood (pics start here)

*123 paparazzi pictures total in the gallery:

[FameFlynet, WENN, INFphoto.com, Bauer Griffin]