Melissa McCarthy Is Basically Cady Heron

Hands down, one of the best parts in Mean Girls is when Cady Heron and co. are getting ready for Halloween. Besides introducing us to the universal truth of, "In the regular world, Halloween is when children dress up in costumes and beg for candy, but in Girl World, Halloween is the one night a year when a girl can dress like a total slut and no other girls can say anything about it," (#iconic) it showed a hilariously naive Cady arrived to the party in a bloody "ex-wife" costume while Regina George, Gretchen Wieners, and Karen Smith romped around in teeny-tiny animal ensembles ("I'm a mouse, duh"). Well, it seems as though St. Vincent actress Melissa McCarthy didn't get the Halloween dress-code memo either, since she pulled a total Cady and rolled up to Adam Levine's bash in a hilariously un-sexy costume.

"He had a huge Halloween party, massive, and I'm pretty sure we got a pity invite so we wouldn't call the cops," she told Jimmy Kimmel when she was a guest on Jimmy Kimmel Live! Monday night. "We showed up, and every single woman was in a different kind of bikini, but it was, 'What are you?' 'I'm a cave girl,' but in a bikini. 'What are you?' 'I'm a medic,' but with two crosses and, like, there's a stethoscope wrapped around her waist. Every single woman had a bikini on, but of a different ilk, I guess."

What did Melissa decide to wear to the shindig? Basically the best thing ever.

"People looked at me and [they] were literally like, 'What are you?' And I was like, 'I'm my Aunt Bernice from Skokie!' And they were like, 'Why would you do that?!' They were so horrified that I looked like that."

How anyone would want to be a sexy nurse instead of Aunt Bernice (or even a piece of sexy pizza) is beyond me. Melissa was straight up WERKING that wig.

The big question is, will she going to the Maroon 5 frontman's Halloween party this year?

"I'm gonna crash it," she told Kimmel. "I'm gonna find out where he lives. I'm comin' for you!"

Fingers crossed she wears this:

Image: Paramount Pictures; Getty Images; ABC; Thought Catalog