Colton Haynes Puts His Butt on Display While Celebrating 'Last Night's Full Moon' -- See the Snap!

Well hello there, Colton Haynes!

The 29-year-old actor definitely wasn't shy while posting his latest Instagram pic: a photo of himself stripped down with his "full moon" on full display.  

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RELATED: Colton Haynes Engaged to Boyfriend Jeff Leatham: See the Romantic Pic!

"Celebrating last night's full moon ?," Haynes wrote alongside a slideshow of himself getting comfortable during his Turks and Caicos vacation with fiance Jeff Leatham.

Leatham also got in on the fun with his own birthday suit snap.

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RELATED: Colton Haynes Pulls Off His Own Romantic Proposal to Fiance Jeff Leatham

The couple hasn't stopped sharing snaps from their tropical getaway since they arrived in paradise on Tuesday. "I would apologize for all the vacation photos but @jeffleatham & I had to sit & watch all of y'all go on vacation this summer so this is payback. More to come. VACATION B**CHES!!! Lol I'm cruel ???," Haynes wrote alongside one shot. 

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RELATED: Colton Haynes Joins Season 7 of 'American Horror Story' -- See the Lipstick-Smeared Announcement!

ET caught up with Haynes in June, when he gushed about his engagement and revealed that Leatham (who has provided the elaborate floral installations for Tina Turner, Chelsea Clinton and Sofia Vergara's weddings) will be taking charge on their big day. 

Watch below.