Kate Upton flashed fans on Sunday, in a new Instagram post, when she shared a photo of her bare butt.

Kate Upton’s Cheeky Instagram Pic Of Bare Butt

Upton, the 23-year-old model, took to Instagram to share a picture that put her assets openly on display.

“Happy Sunday! #buttday #bruceweber #sundayfunday,” the blond model posted Sunday. The pic shows Upton modeling a semi-see through dress during a high fashion photo shoot with photographer Bruce Weber.

Kate-Upton-Butt-Post

Kate-Upton Instagram @kateupton

Upton is turned away from the camera, giving fans a perfect view of her naked bottom underneath the flowing sheer burgundy gown. Upton’s blond hair finished the sexy picture off, as she twisted it up in a unique hairdo.

The image received more than 86,000 likes and 1,700 comments, with one commenter writing, “It’s butt day everyday!”

The Sports Illustrated model is not one to shy away from nude pics. During August of 2014, Upton was a victim of the celebrity nude photo hack. Several nude images appeared online of Upton due to the iCloud scandal.

Upton got back on Instagram on Monday with this beautiful shot.

Kate-upton-Instagram post

Kate Upton Instagram @kateupton

“lovely monday morning with @yutsai88 @soy_the_frenchie and @Angeloevans #selfie,” she wrote.

She also shared a cute pic with Soy, her French bulldog. “Carrying the baby! @soy_the_frenchie @yutsai88,” Upton captioned the photo.

Kate Upton Instagram Post

Kate Upton Instagram @kateupton