Hailey Bieber’s racy see-through lace dress

Hailey Bieber definitely dressed the part in celebration of her husband Justin’s art gallery auction.

The duo looked super slick and stylish as they led the stars at the exclusive event in West Hollywood on Monday.

Normally dressed in casual attire, Justin, 27, upped his game as host of the ‘Freedom Art Experience’ auction and gallery opening, opting for a classic Saint Laurent by Anthony Vaccarello black tuxedo with a matching bow tie.

But while the event was all about Justin, all eyes were on his model wife, 24, who stunned in a black velvet Alessandra Rich gown with sheer, thigh-high leg slits.

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She posed in a way that showed off the dress’s unique design with her legs and booty on full display.

“Last night,” she simply captioned a series of Instagram snaps.

One was of her sitting on a couch, with her legs crossed devouring a slice of pizza, while another was of her and Justin posing inside the exhibition – again with her long legs drawing most of the attention.

Almost two million people have ‘liked’ the post in the six hours since Hailey shared it, with one describing her as “perfection beyond words”.

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“Most beautiful couple alive,” one person wrote, while a second said: “You guys are the cutest.”

Hailey matched her dress with a pair of pointy black heels and accessorised with long dangling diamond earrings.

She had her hair slicked back in a high bun, with one thick strand dangling free by her face.

R&B singers Kehlani and Usher were among some of the high-profile guests at the party.

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Kehlani, 26, who was photographed arriving at the event hand-in-hand with a female friend, wore a white shirt that featured a stripe of silver material and baggy black trousers.

Meanwhile, Usher, who helped Justin get his career started after hearing him on YouTube, opted for a dapper grey suit.

He wore a silky black shirt underneath and sported a flat top with one raised side.

“@usher went crazy last night and supported! LOVE YOU BRO,” Justin captioned a post of himself alongside Usher who was holding a painting that read ‘Freedom’.

“Thank you to everyone who came and supported the freedom art experience last night! What a night.”