K-Pez Takes John Mayer Home For Christmas

Things look to be getting serious between Katy Perry and her on again/off again BF John Mayer.

The Fireworks singer took 35-year-old Mayer home to meet the parents in California this Christmas, even posting a snap of her "Santa Baby" on Twitter.

Despite reportedly splitting up in August, insiders say the relationship is going strong.

A source told Us Weekly magazine: "They are seriously in love and exclusive. John is surprised at just how cool and smart she is.

"John has proved he's mature and learned from his mistakes... Katy is blown away."

During their festive celebration, the pair even visited a local hospital on behalf of the Dream Foundation.

Following their visit on Saturday, the charity tweeted: "Gratitude to @Katy Perry @John Mayer & Hudsons for rolling up their sleeves & serving our dream families. #DreamTeam."

The pair were recently seen getting cosy at a Rolling Stones gig.