The singer and her model pal joined the dance party during Michaelson’s performance of her song "Afterlife."
Audience members shared videos on Instagram of the two as they waved their arms in the air and let loose.
Check out the clips below!
After the show, Ingrid posted a photo from her fun night with the caption, "Central Park Summerstage was amazing. Great friends. Great guests. Great audience. I'm so thankful. And hungover."