The 'One That Got Away' singer sparked rumours that she is expecting a child with husband Russell Brand while attending the 2011 American Music Awards. While performing on stage, Perry wore a tight pink dress that seemed to show a baby bump.
"Hell, no!" she told Hollyscoop when asked if she was thinking about starting a family with Brand.
Perry also addressed the claims in a separate interview.
"I like In-N-Out Burger and Taco Bell and if you want to make that pregnant that's your problem," she told The Insider.
She added: "I still love drinking alcohol, so not yet."
Perry received an achievement award at the 2011 American Music Awards for having five number one singles from the same album, Teenage Dream.
In October, she denied reports of a pregnancy, claiming that she eats too many baked beans when she visits the UK.