Russell Brand not wearing his wedding ring

London - Russell Brand has stepped out without his wedding ring.

The actor and comedian spent Christmas 11000 km apart from wife Katy Perry - who he married in India in October 2010 - after the couple reportedly had a "massive fight".

Russell was spotted shopping in London on Thursday with his diamond band noticeably absent.

According to the Daily Mail, the 36-year-old star happily chatted to fans and even posed for a photograph with one female admirer during the solo shopping trip, sparking further speculation of marriage trouble between Russell and Katy.

Meanwhile, the Last Friday Night singer - who spent December 25 in Hawaii, while her husband was in Cornwall, South West England - has reportedly also been seen without her wedding band as she soaks up the sun on her vacation.

Furious argument

The pair are believed to have originally planned to spend the festive season with Russell's mother Barbara in London before they became involved in a furious argument, and Katy decided to jet off to Hawaii with friends.

A source recently explained: "They had a massive fight. She was like, 'Fuck you. I'm going to do my own thing,' and Russell said, 'Fine, fuck you too!'

"They haven't split up just yet, but things are not good. The fighting is getting worse."