Tom Cruise & Brad Pitt's 25-Year-Long Feud Explodes!

Tom Cruise and Brad Pitt have been locked in a secret feud for 25 years — and it's set to explode big-time, RadarOnline.com can reveal.

That's what movie insiders say now that Pitt's World War Z 2 is stuck in production hell and Cruise is riding high with his comeback in Top Gun: Maverick.

"Tom was the biggest A-list name of the '80s and Brad of the '90s," said an industry source. "They've traded plenty of barbs in the past, but this could be a real showdown!"

The pair first fell out on the set of 1994's Interview with the Vampire, with Pitt admitting he was "miserable" making the film — and Cruise's presence didn't help.

"He bugged me," Pitt reportedly said at the time. "There came a point during filming when I started really resenting him."

"He's North Pole, I'm South," continued Pitt. "He's always coming at you with a handshake, whereas I may bump into you. There was this underlying competition that got in the way of any real conversation."

In 2009, Pitt got under Cruise's skin again after both starred in World War II dramas. While promoting Inglourious Basterds, Pitt dissed Cruise's 2008 flop Valkyrie, slamming it as "a ridiculous movie."

And in 2010, Cruise lost the lead role in Salt as a CIA agent-turned-spy to Pitt's then-wife, Angelina Jolie — even though the part was originally written for a man.

But showbiz insiders insist Cruise will have the last laugh when Top Gun beats World War Z at the box office — if Pitt's movie ever gets made.