Michelle Rounds, Rosie O'Donnell

It’s getting nuts as ROSIE O’DONNELL goes Bridezilla WRECKS!

The TV host, 49, is planning her nuptials to girlfriend Michelle Rounds, and she wants her oldest son, Parker, to wear a designer tux.

But the 16-year-old military academy student is ada­mant about dressing in his cadet uniform at the black tie event, slated to take place later this year.

Making matters worse, Michelle is siding with Parker!

Rosie picked out an expensiveArmani tux for Parker, which she believes complements Michelle’s Vera Wang dress and all of the wedding guests’ formal wear,” a source told The ENQUIRER.

“But Parker is digging his heels in and pushing to wear his military uniform instead. He told Rosie that it’s more than fine for the occasion and that he’ll probably be the only one at the wedding with a shiny brass belt buckle and perfectly shined shoes.

“Parker is proud of the uniform and everything it represents. He thinks it makes him look sharply dressed.

“But Rosie’s furious.

“Only time will tell WHO’s going to win this battle!”