Monday, October 17, 2011 7:18am ET by  
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Katy Perry: 'I'm not pregnant, I just ate too many baked beans'

Pop princess Katy Perry set fans' tongues wagging by rubbing her stomach on stage at London's O2 Arena over the weekend. 

The 'Teenage Dream' singer stroked her belly in front of the 15,000 strong crowd on Saturday night (October 15), but was quick to reassure them that she isn't pregnant and joked it was down to having eaten too many baked beans:

"I didn't know if I was going to be able to show up tonight. I'm not rubbing my belly because I'm pregnant, I'm rubbing because I ate beans on toast. You were going to need a crane to lift my arse in here."

Watch her performance of 'Firework' from London's O2 Arena below: