Kaley Cuoco - Teen Choice Awards 2011 Red Carpet

Kaley Cuoco walks down the blue carpet at the 2011 Teen Choice Awards on Sunday (August 7) at the Gibson Amphitheatre in Universal City, Calif.

The 25-year-old Big Bang Theory actress, who wore a Rebecca Taylor dress, is serving as the evening’s host!

She accessorized with Neil Lane moonstone, diamond and platinum drop earrings and diamond bracelets.

Kaley is also nominated for Choice TV Actress in the comedy category against Miley Cyrus, Demi Lovato, Selena Gomez, and Miranda Cosgrove.

Catch Kaley on the premiere of The Big Bang Theory‘s fifth season on September 22 on CBS!

The 2011 Teen Choice Awards airs live TODAY (August 7) at 8 p.m. on FOX.