iTunes' top 10 selling singles and albums of the week:

Singles

1. "California Gurls (feat. Snoop Dogg)," Katy Perry

2. "Airplanes (feat. Hayley Williams of Paramore)," B.o.B.

3. "OMG (feat. will.i.am)," Usher

4. "Your Love Is My Drug," Ke$ha

5. "Not Afraid," Eminem

6. "Alejandro," Lady GaGa

7. "Bulletproof," La Roux

Albums

1. "Glee — The Music, Vol. 3 — Showstoppers," Glee Cast

2. "Stone Temple Pilots," Stone Temple Pilots

3. "The Fame Monster (standard)," Lady GaGa

4. "Brothers," The Black Keys

5. "Sex and the City 2 (Original Motion Picture Soundtrack)," Various Artists

6. "B.o.B Presents: The Adventures of Bobby Ray," B.o.B

By The Associated Press