Adam Levine and Behati Prinsloo are styling it up in a blast to the past.

Adam Levine & Behati Prinsloo Show Off Their Underwater Skills

On Saturday, the model posted a photo of herself with her husband as they appear to be at a giant 90's birthday party for actress Jenna Dewan-Tatum. In one shot, Prinsloo wears a black outfit with colorful sunglasses while Levine has a pink boa around his neck. As the two strike animated poses with a group of pals, Prinsloo captioned the pic as "SICK."

 SICK happy birthday @jennaldewan

A photo posted by Behati Prinsloo Levine (@behatiprinsloo) on Dec 5, 2015 at 2:23am PST

In another snapshot, the model poses with two girls while looking pretty fab. Prinsloo gives the peace sign in her fun attire and poses like a rock star.

90s is all I got. A photo posted by Behati Prinsloo Levine (@behatiprinsloo) on Dec 5, 2015 at 2:18am PST

Adam Levine & Behati Prinsloo Interlock Legs Like A 'Pretzel'

It seemed like an amazing day overall as Prinsloo took a moment to stick her tongue out near a guy wearing bunny ears.

Sneaky Gene A photo posted by Behati Prinsloo Levine (@behatiprinsloo) on Dec 5, 2015 at 2:36am PST

While Levine and Prinsloo know how to dress for fun, they also know how to keep it classy. In a previous Instagram post, the couple gets dressed up in fancy outfits as they embark upon an elegant evening.

Happy 100th birthday Ol' Blue Eyes  A photo posted by Behati Prinsloo Levine (@behatiprinsloo) on Dec 2, 2015 at 9:43pm PST

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Adam Levine, Behati prinsloo