(Cover) - EN Showbiz - Katy Perry and Russell Brand looked "really in love" during a recent holiday in Mexico.

The couple married last year following a whirlwind romance and there have been rumours they have been going through a rocky patch. It's thought Russell's hectic movie schedule and Katy's recent tour mean they haven't spent much time together.

Russell is currently shooting Rock of Ages in Florida, but before he began work he and Katy travelled to Mexico for a romantic break. They were spotted looking happy and relaxed in Campeche, according to an onlooker.

"Katy and Russell looked really in love," the source told People.

The couple spent their time wondering around streets exploring. They were seen looking at local artists' work, as they walked hand in hand.

"They shopped around and had a really relaxing day," the insider added.

Russell is now busy filming the new music movie, which also stars Tom Cruise, Alec Baldwin and Paul Giamatti. He's been spotted on set in full rock regalia, including huge busy hair and a tight-fitting costume. Rock of Ages is being directed by Adam Shankman and is due out next year. (C) Cover Media