Despite filing for divorce back in December, Katy Perry has been spotted still sporting her wedding ring when she left a photo shoot in California last week.

The US pop star seems unwilling to give up on married life as she was clearly seen wearing her diamond band by paparazzi.

Her estranged husband Russell Brand was the one who started divorce proceedings which, sources close to Perry claim, came as shock to the singer.

The couple were married a traditional Hindu wedding ceremony in October 2010, just over a year after first meeting. Brand fell for the California Gurls singer when they met at the MTV Video Music Awards in 2009. He popped the question just three months later.

Last week Brand was seen in an LA restaurant where the former couple reportedly planned to meet up to finalise the divorce details.