Kelly was on BGT for less than a week before she got the chop, so it's hardly surprising she doesn't have many nice things to say about her former boss!
Speaking to FHM , Kel said she's not seen Simon since the incident but confusingly, he was keen on grabbing a photo with her to make it look like they are still BFFs.
She says: "I saw Simon Cowell once afterwards. I caught his eye and I thought, 'I'm not going to say hello to him, I can't be bothered', and then he kind of just sulked over and sat next to me."
[Related article: Keith Lemon pulls a mooney at Kelly Brook in Cannes]
[Related article: Kelly Brook wows in bikini in Cannes]
"Then all of the photographers came and then they took a picture as if we were friends. We're not friends. I didn't know him before and I'll probably never meet him again."
So basically, Kelly reckons Simon just used her for a quick photo opportunity, the rat!
"I don't understand why he sat next to me for a photo opportunity. I don't know. It was weird."
Kelly added that she finds everything about her BGT stint strange and implied that maybe she just didn't sit well on the panel because of clashes within the show.
"They're all weird. I've been in the business for 15 years. I turn up and I do my job. I'm professional and if I'm not comfortable, I'm honest, I'm really straightforward.
"If it was editing, if it was bad, they could have edited it to make me look good... They said 'be yourself', and I was, and then they fired me!"