Katy Perry & John Mayer Dine Out At Osteria Mozza Published February 8, 2013 at 2225 × 3000 in John Mayer: “Yes, I Was Just A Jerk!” 50982866 Singers Katy Perry and John Mayer hold hands as they leave Osteria Mozza Restaurant after enjoying dinner together on January 4, 2013 in Hollywood, California. FameFlynet, Inc – Beverly Hills, CA, USA – +1 (818) 307-4813