Twilight Cast Rocks Costar's Concert.

New Moon castmates Kristen Stewart, Taylor Lautner, Nikki Reed and Kellan Lutz all showed their support last night at costar Jackson Rathbone's concert.

Jackson, who plays Jasper in the Twilight movies, performed with his band 100 Monkeys at the Backstage Lounge in Vancouver.

While Taylor was seen snuggling up to a mystery brunette, castmate Ashley Greene reportedly left hand in hand with new boyfriend Ian Somerhalder.

One vampire who missed the music? Rob Pattinson.
Source: E!Online