The rumour started after a prankster posted a fake picture of the 13-year-old on her facebook wall holding a sign which read, "I'm pregnant! 5/15/11".
The image, which was doctored from an actual image of the teen, was quickly removed - but not before a number of news sources picked up the story.
Today the 'singer' tweeted her denial: "I thought it was May 15th...not April Fools Day. I'm absolutely NOT pregnant."