Avril Lavigne - Teen Choice Awards 2011 Red Carpet

Avril Lavigne steps out on the blue carpet at the 2011 Teen Choice Awards on Sunday (August 7) at the Gibson Amphitheatre in Universal City, Calif.

The 26-year-old singer, who wore her own Abbey Dawn designs, just wrapped up her South American tour with a performance in Brazil.

“Last show of the south american tour!!! LETS KICK SOME ASS BRASILIA BRAZIL!!!!” Avril tweeted before her final show.

Next month, Avril will head to Europe for the next leg of her tour!

The 2011 Teen Choice Awards airs live TODAY (August 7) at 8 p.m. on FOX. The Big Bang Theory‘s Kaley Cuoco is hosting the show!