Kristen Bell & Hunter Parrish Go Back in Time for 'Hair' - Watch Here!

Kristen Bell twirls around on stage at the Hollywood Bowl for a live performance of Hair on Friday night (August 1) in Los Angeles.

The 34-year-old actress was joined by Sarah Hyland, Amber Riley, Jenna Ushkowitz and a shirtless Hunter Parrish for the show.

PHOTOS: Check out the latest pics of Kristen Bell

After the show, a lot of cast members tweeted their thanks to everyone who came.

“Thanks to everyone who came and thanks to all the peeps who waited backstage for us peeps #HAIRatthebowl two more shows,” Amber tweeted.

“Night one down!!!! Thank you all so much for coming!!! Had the most amazing time. Now off the bed and only have two shows left! :(,” Sarah tweeted.

10+ pictures inside of Kristen Bell and more performing…