Here's all you need to know about the 'Califonia Gurl' who began her musical career as a Christian gospel singer.
Katy Perry
News
Katy Perry named Billboard's Woman of the Year
California Gurl has been named as Billboard magazine's 'Woman Of The Year' for 2012.
MTV EMA 2012: Nominations List
Rihanna and Katy Perry are up for several awards at the 2012 music ceremony
Gallery
Cheryl Cole and Katy Perry to guest on Rihanna's fashion show
The 'We Found Love' singer has recruited a team of a-list stars to help out each week on her Styled to Rock reality show.
Gallery
Katy Perry banned from wearing spinning bra
The 'Part Of Me' star's insurers are worried the device could cause a serious neck injury.
Photos
Gallery
Celebrity Photos Of The Day
Prince William and Kate go to the Cheltenham races and Lady Gaga shows off her 24 carat gold plated wheelchair following hip surgery
Gallery
Grammys 2013: Best Dressed
Find out why Jennifer Lopez is the talk of the town and take a look at the best dressed stars from this year's Grammys
Gallery
Celebrity Hair: The Top Knot
From the scraped back to the 'loosely piled on top of the head' look... the top knot is the hair style that so many celebrities seem to be sporting! How would you wear yours?
Gallery
Celebrity Photos Of The Day
Take a look at Michael Bubleé and Luisana Lopilato's sonogram as they announce their pregnancy and see Jennifer Lopez dazzle at a screening of 'Parker'
Videos
Video
Katy Perry unveils Part of Me 3D trailer
The California Gurls singer has premiered the full promo video for her first documentary film.
Video
David Beckham and Katy Perry in new advert
Watch the new Adidas advert in which David Beckham and Katy Perry go for a run.
Video
Watch the new Katy Perry video
The 27-year-old star has unveiled the hotly anticipated music video for her latest single Part Of Me.
Katy Perry drops video teaser
Singer unveils snippet of "Last Friday Night (T.G.I.F.). Watch it here!
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