If you couldn't already tell, Jerry and Jessica Seinfeld aren't regular parents - they're cool parents.
So cool, in fact, that they not only threw their daughter a swanky 21st birthday bash, but stuck around to take part in the glittering, shot-fueled revelry.
Over the weekend, Sascha Seinfeld celebrated her big day with a Roaring Twenties themed party, dressed to the nines in a sparkling silver mini and matching headpiece that would make Daisy Buchanan proud.
The birthday girl and Duke University student was joined by a posse of fabulous friends in their flapper best, along with her younger brothers Shepherd and Julian, making the night an all-out family affair.
Proud mom Jessica, the philanthropist, cookbook author, and chic social scene staple, took to Instagram to wish Sascha a happy birthday and share snaps from inside the event.
"We had the best weekend celebrating this phenomenal human being, along with her friends, who love her almost as much as we do," she wrote in the caption. "She works hard, she plays hard, and in between, makes life better for everyone in her orbit. I love you, Little Magic Girl."