Behati Prinsloo Shows Off Post-Baby Bod in Super Sexy 'Pretty Woman' Costume

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Looks like Behati Prinsloo got her supermodel body back in no time.

The 27-year-old Victoria's Secret model stepped out on Monday night with her husband, Adam Levine, to his band Maroon 5's annual Halloween bash, where she showed off her slim figure while dressed up as Julia Roberts' character, Vivian, in Pretty Woman. Prinsloo gave birth to their daughter, Dusty Rose, in September.

But you wouldn't know that Prinsloo had been pregnant just a little over a month ago by looking at her, judging by her flawless appearance in over-the-knee black boots and a racy cut-out dress. The model stuck close to her hubby, who was dressed up as Led Zeppelin frontman Robert Plant.

PICS: Best Halloween Costumes of 2016

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But this wasn't Prinsloo's only Halloween costume. On Saturday, she stepped out in a cute cheetah outfit at KROQ's Halloween Costume Ball in Los Angeles.

WATCH: Adam Levine and Behati Prinsloo Share First Photo of Their Baby Girl!

Last month, 37-year-old Levine talked about being a first-time parent with Prinsloo. The attractive pair has been married since July 2014, when they tied the knot in Mexico.

"I like to think that parenting is something that we were literally put on this earth to do," the Voice coach told Ryan Seacrest on the host's radio show, On Air With Ryan Seacrest. "I don't know anything. But it's kind of part of the beauty of it, honestly. There are a lot of instincts, a lot of things that kind of kick in and switch on. It's a beautiful experience."

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