On October 21, the model and beauty tycoon wore black silk while attending Doja Cat's celebrity-studded birthday celebration in Los Angeles with her husband Justin Bieber.

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In keeping with the masquerade theme, Hailey's dress included a silk eye mask as well as a chemise-style top with black lace accents, underwear, and suspenders.  

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She accessorised with a pearl cross necklace (worth £335) by Vivienne Westwood while wearing her brunette hair half-up. 

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For the party, Justin also wore all-black attire, including a silk shirt, pants, a cloak, gloves, and his own eye mask. 

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Doja herself showed up to her party wearing a cape and a complete feathered mask, but she eventually changed into lingerie like the rest of her guests, indicating it was part of the dress code. 

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Other notable attendees included Normani, who donned a jewelled bra, thong, and corset that she published on her TikTok page, and Winnie Harlow, who wore a gorgeous silver underwear set with a robe. 

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It's not the first time Hailey Bieber has adopted the current ultra-sexy fashion trends, either; at the most recent Academy Museum Gala, she also wore a midriff-baring Saint Laurent gown, earning praise not only for her attire but also for publicly demonstrating there is no animosity between herself and Justin's ex Selena Gomez.

The two appeared to be very amicable as they posed for pictures together while warmly embracing one another. 

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Hailey previously talked openly about the criticism she continues to receive for her marriage and the accusations of infidelity. 

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