The Modern Family actress, 18, was escorted by her new man, Levi Meaden, who posed for pictures with her on the red carpet.
Winter strutted her stuff in a black and white gown with a plunging neckline, once again embracing her curves. She also Snapchatted some photos with her new beau from inside the event.
The ABC star was on hand to present Kelly Osbourne with an award for her contributions to the LGBTQ community. The Trevor Project provides crisis intervention and suicide prevention services to LGBTQ youth under the age of 25.
Also in attendance was actress Chloe Grace Moretz, who was involved in an online tiff with Winter and Kim Kardashian this past March after Moretz slammed Kardashian for posting a nude pic, which Winter defended the reality star over.