Katy Perry & John Mayer: Rolling Stones Concert Couple!

Katy Perry and her boyfriend John Mayer attend the Rolling Stones concert at the Prudential Center on Thursday (December 13) in Newark, N.J.

Earlier in the day, the 28-year-old singer did some shopping in the downtown area of New York City.

PHOTOS: Check out the latest pics of Katy Perry

The night before, Katy and John took their romance public while attending a performance of A Christmas Story: The Musical.

The couple visited with the cast backstage after the show and took some photos with the actors.