We mostly hear about IMG model Ireland Baldwin through her red-carpet appearances and risque Instagram posts, so we were kind of taken aback to see her at Mercedes-Benz Fashion Week actually modeling stuff on a runway. PHOTOS: Ireland Baldwin's Tight Kaleidoscope Dress: Love It or Hate It? Last Friday, the 18-year-old presented a Donna Karan creation in the annual Heart Truth Red Dress Collection fashion show, which is sponsored by the American Heart Association's "Go Red for Women" campaign. Baldwin was just one of many celebrities to strut their stuff on the catwalk in NYC's Lincoln Center, among them decorated Olympian Lindsey Vonn and actresses Bella Thorne and AnnaSophia Robb (all pictured below). PHOTOS: 18-Year-Old Ireland Baldwin's Low-Cut Dress: Too Risque? The very same day, Baldwin posted a photo to her Instagram account modeling a very different kind of get-up, which left much less of her figure (namely her legs) to the imagination. "I know if I'm haunting you, you must be haunting me," she captioned the photo (lyrics from Beyonce's "Haunted"), which was taken by NYC photographer Marcelo Cantu. PHOTOS: Eddie Murphy’s Daughters Are All Grown Up and Modeling Lingerie See more of Baldwin's Fashion Week dress below, along with the equally red creations worn by Thorne, Robb and Vonn.