Hailey Bieber Hops on the Lingerie as Clothing Trend With YSL Mini Dress — See Photos

Hailey Bieber is making the most of the last days of summer and creating the perfect capsule wardrobe for her busy days in NYC — with lingerie accents to boot.

On September 5, 2025, Hailey Bieber was spotted at the release party of Justin Bieber's new Swag II album wearing a complete Saint Laurent by Anthony Vaccarello look that works just as well for the bedroom as it does for the streets of New York.

Hailey, who was spotted alongside her husband leaving the The Twenty Two Hotel in Midtown, is the latest star to hop on the lingerie as clothing trend, joining the likes of Rihanna and BLACKPINK's Rosé. Hailey's lingerie-inspired pick was the silk-satin Saint Laurent lace slip mini dress, featuring a lace halter neckline that extended to the chest.

Sticking to a black monochrome color palette, she paired the chic nightie with the new quilted Icarino bag and a pair of '90s-inspired Daisy Mules in satin crepe, featuring a rhinestone buckle detail, a square toe, and a kitten heel.

It looks like Hailey has found her late summer ally in silk, satin and lace, because the star can't stop wearing these fabrics during her NYC trip. Earlier in the day, the star was seen in Tribeca wearing a copper satin co-ord set, comprised of a tie-up blouse with a plunging V-neckline and loose palazzo pants, which she completed with a pair of super dainty thong sandals.