Hailey and Justin Bieber pose for Calvin Klein underwear ad photos

The model, 22, straddled the musician, 25, as they posed in motif underwear in steamy new shots, sharing the images on their respective Instagram accounts on Tuesday.

Hailey and Justin Bieber pose for Calvin Klein underwear ad photos

Justin Bieber & Hailey Bieber Star in Calvin Klein Ad Together

Justin Bieber and Hailey share steamy kiss as they…

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Men not buying what celebrities in their undies are selling

Quality Bargain Hailey Bieber Stars in Calvin Klein's Holiday Campaign (Exclusive, calvin klein

Quality Bargain Hailey Bieber Stars in Calvin Klein's Holiday Campaign (Exclusive, calvin klein

PHOTOS] Sexiest Calvin Klein Ads — See The Raciest Shots Of All

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Justin Bieber and Hailey share steamy kiss as they…