Zac Efron arrived with his longtime girlfriend Sami Miro to ABC studios for a taping of Jimmy Kimmel Live Tuesday afternoon.

Zac Efron & Sami Miro

Efron walked up to the studio in Hollywood, Calif., in a tight-fitting black t-shirt and faded gray jeans. The Neighbors star kept his eyes hidden behind a pair of aviator sunglasses. At his side, his girlfriend appeared to be outfitted in a blue and white button-down shirtdress and brown booties.

While getting ready to chat with Jimmy Kimmel, Efron was photographed behind the scenes sitting shirtless in a chair. “I woke up like this @jimmykimmellive #dirtygrandpa,” Efron captioned the snap, which also featured his stylist and hair products in the background.

A photo posted by Zac Efron (@zacefron) on

During an appearance on The Ellen Show earlier this week, Efron opened up about his romance with Miro, who he has been dating for more than a year. “Yeah, things are great,” Efron told Ellen DeGeneres. “She’s awesome, she’s a superstar. We get to do cool stuff.” Among the “cool stuff” they do together is “hit the road” in between his projects. Not long ago, Efron and Miro took a trip to the Vietnam and shared several snaps from the adventure.

A photo posted by Zac Efron (@zacefron) on

“Had an enlightening trip to Vietnam. Wonderful people, delicious coconuts, complicated history, priceless memories,” Efron captioned a collage of pictures from the trip.

A photo posted by Zac Efron (@zacefron) on

Dirty Grandpa, in which Efron stars opposite Robert DiNiro, is currently in wide release.