Zac Efron is apparently the latest star to make a cameo on TV show 'Entourage.'
The 'High School Musical' star filmed scenes for the sixth season of the Hollywood-centric comedy at the Beverly Hills Niketown store, E! News reported.
"He was filming a scene and talking on his cell phone, none of the other Entourage cast was here - he was really nice," a Niketown employee said.
An onlooker said Zac and the 'Entourage' film crew arrived around 9am, before the store opened, to shoot his scene.
"He was wearing sunglasses, and he left in a limo with another guy," said the eyewitness.
Celebrities expected to appear as themselves in season six of the show include Lil Wayne and US superstar athletes Tom Brady and LeBron James.
The new series is expected to premiere on US screens on July 12.
