What a crew. (@lindseyvonn)
What a crew. (@lindseyvonn)

Under Armour turned 20 this week (that can't be right, can it?), and Jordan Spieth was at a party with several other athletes to celebrate the festivities. 

Spieth joined Tom Brady, Lindsey Vonn and others as Vanilla Ice played and everybody stood under a bunch of confetti. Spieth photobombed Vonn and Vanilla Ice pretty hard at one point which was awesome. 

Vonn's former boyfriend Tiger Woods was not present, but that didn't keep Vonn from getting down.

Spieth made a recon trip to Oakmont to prep for the U.S. Open before going to the Under Armour shindig. He said earlier in the week that he would sign up for even par right now.

"So even though it's a shorter golf course by yardage, it doesn't play short," said Spieth. "There's just so many other tough holes that par is going to be a fantastic score. I'd sign for even par right now for 72 holes in June. Obviously given the history, but also having played it."