Katy Perry is reportedly preparing "her body and mind" to have a baby.

Since going public with their relationship in December, Katy has been inseparable from her boyfriend John Mayer. The pop star is completely taken with John, with claims she is considering starting a family with her beau.

“She’s gained a few pounds," a source explained to British magazine more! “Katy is taking a much needed break from work, and perhaps even getting her body and mind ready for pregnancy."

The couple went on holiday to Hawaii over New Year, where John’s affection for the pop star was reportedly even clearer. The rocker was apparently unable to keep his eyes off Katy. An insider observed that John was constantly taking pictures of his girlfriend, claiming: “He couldn’t stop snapping away. Katy was happy to oblige - she found it very amusing.”

Katy was previously married to British comedian Russell Brand, with their divorce finalised in July 2012. John has dated celebrities such as Jessica Simpson, Taylor Swift and Jennifer Aniston. Sources confide that John fell for Katy because of her self-sufficient nature.

“Katy is so independent and not needy and clingy like other girls he dated,” the source stated.

John recently sparked rumours that he may be planning on proposing to the California Dreams singer after he was spotted perusing engagement rings.