Cara Delevingne flashed her midriff as she was joined by a host of other stars at DKNY’s 30th birthday party, including her actress girlfriend Ashley Benson.

The British model sported a white cropped top and black baggy trousers for the red carpet event, teaming the look with a severe high ponytail and dramatic green eye make up.

DKNY 30th Birthday Party
Cara Delevingne (Christopher Smith/PA)

Her girlfriend Ashley Benson also attended the event, but they did not pose for photos together on the red carpet.

The Pretty Little Liars actress chose a teal crushed velvet jacket, worn with nothing underneath and teamed with black stilettos with ankle straps.

DKNY 30th Birthday Party
Ashley Benson (Christopher Smith/AP)

The couple were joined by Delevingne’s model pal Kendall Jenner, who wore a black double-breasted jacket dress over a black sheer top.

DKNY 30th Birthday Party
Kendall Jenner (Christopher Smith/AP)

She teamed the ensemble with a black clutch bag with a hand strap bearing the name of the fashion house.

Singer Halsey also put on a racy display at the party at St Ann’s Warehouse in New York City.

DKNY 30th Birthday Party
Halsey (Christopher Smith/Invision/AP)

She chose a black dress with huge slits up the thighs and a lace-up bodice that exposed her torso and hips and showed off her tattoos.

Meanwhile model Winnie Harlow teamed her electric blue locks with a sporty black and white playsuit.

DKNY 30th Birthday Party
Winnie Harlow (Christopher Smith/Invision/AP)

The party celebrated 30 years of DKNY, the New York-based fashion house founded by Donna Karan.