Hailey Bieber flashes her butt in G-string underwear

make a cheeky move on social media on Tuesday.

The 31-year-old Vogue model was laying down on her back as she twisted to show off her tiny black G-string underwear that flashed her butt.

On top the wife of added a low-cut black lace camisole that fit her tight as her brunette hair fell down onto a shag carpet. In all the shots she was rolling around on the ground while looking very sultry.

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