The 'Heart Attack' singer was one of the star performers at the annual awards show in Los Angeles.
The Jonas Brothers
Brothers Joe, Kevin and Nick make up the American boy band who became famous from The Disney Channel's TV network. Their singles include 'Burning Up' and 'SOS'.
Real name: Joseph Adam Jonas
Born: August 15, 1989
Birthplace: Casa Grande, Arizona, U.S.
Real name: Paul Kevin Jonas II
Born: November 5, 1987
Birthplace: Teaneck, New Jersey, U.S.
Real name: Nicholas Jerry Jonas
Born: September 16, 1992
Birthplace: Dallas, Texas, U.S.
First Single: Mandy
First Album: It's About Time
The 'Heart Attack' singer also says she is "so proud" of friends like Miley Cyrus for their musical successes.
The Jonas Brothers star says ex-girlfriend Taylor's new single is definitely not written about their relationship.
Whether the creams could be heard from space, we're not sure, but central London was definitely echoing to the sounds of the massed ranks of Jonas Brothers fans last night.
Believe it or not the boys are back with a new album already. Watch their James Bond-esque new video here.