Zac Efron: Good Morning, Baltimore!

Zac Efron shakes and shimmies on the dance floor on Wednesday at the the premiere of Hairspray in Baltimore, MD, where the original play was based.

Also pictured: John Waters (1988 screenplay), Nikki Blonsky, Amanda Bynes, Elijah Kelly and director Adam Shankman.

Hairspray opens TOMORROW, July 20th!!!! Hey mama, welcome to the 60′s!! Ooo-ooo-ooo-ooo!!! Hey mama, go go go!!!

20+ pictures inside of Zac dancing with the nicest kids in town…