Oh, Avril ... must you always have to show your rock star attitude?

While cruising through the airport in Berlin, Germany in her sleeveless shirt, the 26-year-old punk rock princess gave us the tongue. Beau Brody Jenner was nowhere in sight. Maybe that's why Ms. Lavigne was not feeling like smiling for the cameras.

See more of the "Complicated" singer's airport attitude ... after the jump.