Zac Efron & Emily Ratajkowski Wrap Up the 'WAYF' Tour

Zac Efron shows off his infectious smile alongside Emily Ratajkowski while attending the after party following the final We Are Your Friends tour screening on Friday (August 21) in San Francisco, Calif.

The co-stars were also joined at the event by their director Max Joseph. While in the DJ booth at the party, Zac rolled up his sleeve and revealed his bulging bicep!

PHOTOS: Check out the latest pics of Zac Efron

“Bay Area! Stoked to be back in my home away from home #GoGiants Thank you for coming to the final screening of @wayfmovie! What did you think? #WAYFtour #SF #WAYF,” Zac captioned a video on Instagram from the screening.