The 37-year-old quashed the pregnancy speculation by posting two humorous pictures of her belly.
In the first picture, she is shown with her belly protruding and in the second, she has sucked in her tummy completely.
The rumours began after Price posted another post on Instagram which read ‘2 more days until my new exciting news.'
It was accompanied by a series of emojis including baby bottles, which prompted fans to think she was pregnant - but the "exciting news" ended up being the launch of her new mobile app.
WATCH a snippet of Katie Price discuss life as a mother below. Post continues after video...
In June 2005, she gave birth to Junior Savva Andreas Andre and in June 2007, she delivered daughter Princess Tiaamii Crystal Esther Andre.
Andre and Price divorced in 2009, and Price went on to have two more children, Jett Riviera and Bunny.