Paparazzi photos from Friday, September 16

Mandy Moore shopping in the West Village of New York (pics start here)

Alicia Silverstone on the set of Gods Behaving Badly in New York (pics start here)

Ali Larter leaving a friend's house in Beverly Hills (pics start here)

Olivia Wilde on her way to the Ralph Lauren show during Fashion Week in New York (pics start here)

Elisabetta Canalis arriving at a dance studio in Hollywood to rehearse for Dancing with the Stars (pics start here)

Avril Lavigne arriving at NRJ Radio Studios in Paris (pics start here)

Kelsey Grammer arriving at a hotel in London (pics start here)

Gwen Stefani and her son Zuma out and about in Studio City (pics start here)

Liv Tyler leaving her apartment in New York (pics start here)

Dita Von Teese shopping in Studio City (pics start here)

Hilary Duff shopping in Glendale (pics start here)

Cheryl Burke outside a dance studio in L.A. (pics start here)

Ali Larter and her husband Hayes MacArthur leaving Hugo's restaurant in West Hollywood (pics start here)

Selena Gomez and Justin Bieber at the premiere of Abduction at Grauman's Chinese Theatre in Hollywood (pics start here)

Penelope Cruz and Javier Bardem out and about in Sarajevo, Bosnia (pics start here)

*123 paparazzi pictures total in the gallery:

[Flynet, WENN, Pacific Coast News]