Zac Posen's Most Memorable Fashion Moments

Zac Posen, who revealed Friday that he is closing his namesake business, was a go-to designer for the red carpet set and beyond.

The designer’s famous fans ran the gamut from Hollywood, to politics — and even, on occasion, British royalty. Posen counted admirers in First Lady Michelle Obama, Ariana Grande, Sarah Jessica Parker and his former “Project Runway” co-star Heidi Klum to name a few.

The designer was famous for his statement-making red carpet dresses, such as Claire Danes’ trek up the Met Gala steps in 2016 in a light-up ball gown and with Grande’s Cinderella-inspired Grammys dress earlier this year (which the singer still posed in on Instagram despite not attending the awards show).

Posen’s work could also inspire awe on the runway, as was the case at his fall 2015 fashion show, when Naomi Campbell finished out the lineup in a metallic burgundy ballgown, ushering a rare round of applause during New York Fashion Week.

Scroll on to see 17 of his unforgettable fashion moments through the years.