The former glamour model-turned-businesswoman didn't hesitate to answer when quizzed about former lovers during her An Evening With Katie Price in Gateshead, according to The Sun.
Katie, 38, declared that ex-fiance Leandro Penna had the biggest willy but current husband Kieran Hayler, who was a part-time stripper when she met him, is also well-endowed.
Commenting on sex with Leandro, Katie said: "I used to get cystitis all the time with it, honestly, I am being crude but when it goes in it is like 'ugh'. He was big but I can't even remember."
She then added: "Kieran's is big as well – Google it, I can only have the tip."
We'll take your word for it, Katie!
Katie's currently promoting her brand new autobiography Reborn, in which she also briefly mentions sex with Leo.
She writes: "Leo was so well hung he gave me nothing but cystitis the whole time I was seeing him. What can I say? I always tell people, 'I'm a very upfront person'. Ask me an honest question and I'll give an honest answer."
Katie split from Argentinian model Leandro in 2012. She married third husband Kieran the following year.
Reborn largely focuses on Katie's discovery in 2014 that Kieran had been having sex with her best friend, Jane Pountney, and how she went from vowing to divorce Kieran to giving him a second chance.
Katie and Kieran have two children - Jett, three, and Bunny, two - and Katie is also mum to sons Harvey, 14, and Junior, 11, and daughter Princess, nine.