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During a Wednesday appearance on The Tonight Show, Academy Award-winning actress Sandra Bullock said her son Louis, 5, picked out an “inappropriate” Halloween costume for her.

As it turns out, her son will be a Ninja Turtle for Halloween. “It’s a classic,” she shared. “He’s a classic guy. We usually match. This year he sort of deviated off the matching.”

But for mom’s costume, Louis was hoping for a different look this year.

“He chose… slutty Batgirl,” the Our Brand Is Crisis actress, 51, shared. “There’s regular Batgirl, and then there’s the Batgirl for the moms who really like to turn it out… We were going through there’s actually a sensible catalogue, and he said, ‘Momma, you has to wear dis!’ and I said, ‘No, momma does not have to wear dis. I’m not wearing that around your friends, honey.’”

Instead, the actress plans to be “a pirate wench, covered head to toe, or just the basic mime.”

That said, Louis will probably not approve. “He doesn’t like makeup. He wants hair down, no makeup, and then sweatpants and a T-shirt,” she said.