Kendall Jenner took to Instagram on Monday to share several photos from her first-ever gala at the Metropolitan Museum of Art in New York City. The 18-year-old model attended the event in a blush hourglass Topshop gown, which, per one of the pictures she shared on the image sharing site Instagram, didn't allow her to sit down. Jenner also shared pictures of herself posing along sister Kim Kardashian and fellow models Jourdan Dunn and Chanel Iman. The Keeping up with the Kardashians star later attended Rihanna's official after party at Up & Down in the West Village, where she was seen hanging out with Givenchy's Riccardo Tisci, model Cora Emmanuel and her sister Kylie Jenner. You can check out more pictures from Jenner's evening here.