The 'Teenage Mutant Ninja Turtles' star, who has locked lips with the likes of Adam Scott and Amanda Seyfried in the past, enjoyed her smooch with the 28-year-old actor whilst filming the sci-fi movie in 2009, reported Contactmusic.
When asked with whom she had her favourite on-screen kiss, she replied, "Shia LaBeouf."
Fox, 28, also recently admitted she is not worried about her former co-star after he was arrested in New York in June.
"I'm not worried about Shia. I love my Shia. He's perfectly fine. I haven't talked to him in a couple of years, but I don't worry about him. He's a brilliant kid, talented and funny... There's no reason to worry."