If you hadn't already heard, it's currently New York Fashion Week, and we've been seeing so many fashionable celebs and street style stars, it's hard to keep them straight.

And while we're still kind of in mourning over Cara Delevingne's absence from the shows, her sister Poppy has provided us with enough fashion inspiration to tide us over until we see the supermodel again.

At the G-Star Raw event on the Highline on Tuesday, September 10th, Poppy stunned in a navy and black striped sweater dress. She paired the look with studded black ankle booties for a sexy but casual, evening out on the town look. We're definitely thinking about recreating the entire look ASAP -- don't be surprised if you see a StyleList editor out on the town in something very similar.

Want to see more details on Poppy's look from the G-Star Raw event? Click through the gallery!