• NAIL BITER photo | Katy Perry

Credit: Noel Vasquez/Getty

Published: Wednesday October 31, 2012 06:00 AM EDT

2012

NAIL BITER

Katy Perry puts on her best game face during the NBA season opener between the Los Angeles Lakers and Dallas Mavericks at L.A.'s Staples Center on Tuesday. The Mavericks beat the home team, 99-91.