On Wednesday, Sandra Bullock sat down with Jimmy Fallon on 'The Tonight Show' where she revealed her her plans for Halloween this year.

The 51-year-old-star shared that her 5-year-old son, Louis was planning to go trick-or-treating as one of the beloved character of the famous Teenage Mutant Ninja Turtles.

"We usually match, but this year he sort of deviated off the matching," Bullock said. Also revealing that the costume her son had originally picked for her was, as she called it, 'Slutty Batgirl.'

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"It was like the most inappropriate thing," Bullock added. "You know how there's regular Batgirl, and then there's the ones for those moms that like to really turn it out? Like, with a little leather skirt, and the boots that go over the knee, and a bustier? I'm not going to be wearing that."

Meanwhile, Bullock also shared that together with Louis, they have been looking at catalogs to pick out Halloween costumes, and when that 'Batgirl' costume came to view, her son thought it would be a perfect outfit for her.

"He went, 'Momma, you hasta wear this!'" Bullock shared. "And I went, 'No, mamma doesn't hast to. I'm not wearing that around your friends.'"

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When asked about what she will be wearing for Halloween, Bullock revealed, "Either like a pirate wench, covered head to toe, or just the basic mime," she confessed, laughing.