Hailey Bieber and Kendall Jenner match in lingerie at Doja Cat’s birthday

Ladies in lace.

BFFs Hailey Bieber and Kendall Jenner coordinated their costumes for Doja Cat’s 27th birthday masquerade party Friday, showing up in likeminded black lingerie looks.

Bieber, 25, slipped into a vintage Victoria’s Secret chemise, sheer thigh-high stockings trimmed with lace and a sweeping velvet cape, which she accessorized with black patent pumps, a Vivienne Westwood pearl choker ($545) and a lacy eye mask.

Jenner, 26, teamed her Fleur du Mal bra ($128) and corseted bodysuit with sheer Calzedonia тιԍнтs ($7), dangling Dolce & Gabbana earrings ($775), Tom Ford Mary Janes and a dramatic black lace veil.

The two models weren’t the only ones dressed in black lingerie for the seemingly “Eyes Wide Shut”-inspired affair; Justine Skye, H.E.R. and Normani all picked similar styles, with the latter showing off her sheer embellished corset, matching thong and fishnets in a Sєxy TikTok.

Kendall Jenner keeps a low-profile leaving Doja Cat's themed birthday Bash!

Winnie Harlow, meanwhile, layered her glittering silver bra and G-string beneath a gray floor-length, feather-trimmed robe, and birthday girl Doja was unrecognizable with her gilded Venetian mask and enormous feathered headdress.

Other celebrities in attendance included Justin Bieber, Tyga, Ty Dolla $ign, Shawn Mendes and Niall Horan — although the latter two men appeared to ignore the evening’s theme, showing up in simple shirts and slacks and skipping masks.

Doja Cat is all partied out as she exits her 27th birthday event in WeHo!

It’s no surprise Doja would opt for an over-the-top costume party to celebrate her big day; the “Vegas” singer’s famous for her boundary-pushing personal style, having rocked everything from statement thongs to topless couture in recent months.

Doja’s beauty statements have been equally bold of late, with the Grammy winner — who shaved her head and ditched her eyebrows this summer — painting on a series of dramatic makeup looks for Paris Fashion Week earlier this month.