Steven Tyler crashes a Backstreet Boys concert, and it’s ‘larger than life’

Steven Tyler joined Backstreet Boys on stage in Las Vegas this past Friday night (April 19).

The Aerosmith singer made an appearance after the Backstreet Boys presented a female fan with a rose, as they usually do, while performing the song “Shape Of My Heart”. This time, the fan turned out to be Aimee Ann Preston, Tyler’s girlfriend.