Hailey Bieber puts on a busty display in a plunging jumpsuit for a glamorous Saint Laurent campaign

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Hailey Bieber oozed glamour in a jumpsuit with a plunging necklace that showed off herample cleavage as she gazed at the camera for a sexy Saint Laurent campaign.While modeling garments from theFrench fashion house, including a faux fur jacket, the 25-year-old supermodel can be seen laying on her side as she shot a smoldering stare at the camera.In the images, posted to her Instagram on Tuesday, theRhode founderpositioned her lips into a subtle, sultry pout as she rested her head on the palm of her hand.

Glamorous: Hailey Bieber oozed glamour in a jumpsuit with a plunging necklace that showed off her ample cleavage as she gazed at the camera for a sexy Saint Laurent campaignIn addition to flashing quite a bit of underboob, the five-foot-seven beauty bared plenty of herdécolletage and part of her incredibly toned midriff.

Her wavy, light brown hair was styled in soft, tousled waves, which cascaded past her shoulders.The formerballet dancer's post comes just a day after her husband Justin Bieber shared a sweet snap of themkissing their pal Jason Kennedy's newborn son Ryver.

Gorgeous: While modeling garments from the French fashion house, including a faux fur jacket, the 25-year-old supermodel can be seen laying on her side as she shot a smoldering stare at the camera While ringing in the Fourth of July with the adorable infant, the 28-year-old pop star and model, 25, appeared to have a case of baby fever as they planted kisses on both the child's cheeks.In an image, posted to the singer's Instagram account on Monday, Justin can be seen sporting a backwards olive green baseball cap and striped button-down over a plain white t-shirt.As Hailey cradled the baby boy, who Kennedy shares with Lauren Scruggs, Hailey was a natural.