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13 August 2012, 14:00 | Updated: 13 August 2012, 14:34
The 'Part Of Me' singer enjoyed a day at a water park fresh from spending the evening with the singer.
Katy Perry enjoyed a summer day out with friends yesterday, fresh from being pictured out together with US singer-songwriter John Mayer.
The 'Wide Awake' singer showed off her bikini body at the Raging Waters watermark in San Dimas, California on Sunday (13th August), decked out in a black and white halter neck swimsuit to show off her slim figure.
Katy's day out in the sun follows the previous night when she was spotted walking next to 'Wonderland' singer John Mayer, after several weeks of rumours the two have become an item over the past month.
Check out a picture of Katy Perry enjoying fun in the sun below (Credit: Barcroft Media):
The 'Teenage Dream' star looked calm and at east while walking alongside John dressed in a short red floral dress and cream headband.
Last week Katy showed off a new side when she posed in several sultry black and white shots for a photoshoot to promote a new range of GHD products.
Katy Perry is currently preparing to start penning tracks for the follow-up to her 2010 sophomore record.