Actor Zac Efron stopped by "Dancing with the Stars" to support his brother Dylan Efron, who is competing on season 34.

"The Iron Claw" star made his first cameo in the live audience, rooting for his younger sibling on Prince Night.

Zac Efron finally made an appearance on “Dancing With the Stars” in support of his brother Dylan Efron during the semifinals.

Zac Efron finally made his “Dancing With the Stars” appearance during Prince Night, just in time to support his younger ...

Zac Efron made a long-awaited appearance in the Dancing With the Stars season 34 semifinals audience to support his brother, ...

The Traitors winner, 33, caught up with PEOPLE after the semifinals on Tuesday, Nov. 18, after his brother, Zac Efron, came ...

Zac Efron was spotted in the 'Dancing With the Stars' audience as Dylan Efron competed for a spot in the season 34 finale ...

Dancing With the Stars pro Daniella Karagach revealed why she rejected her partner Dylan Efron 's hug during the semifinals ...

Spotted: A Vitamix blender slashed by $99, a KitchenAid stand mixer marked down by $120 and more sales worth snagging before ...

Dylan Efron and Daniella Karagach looked incredible when they took to the stage to perform their dances for Prince Night.

DWTS pro Daniella Karagach didn't ignore Dylan Efron's request for a hug — she just had something important to attend to ...

A viewer thought they caught drama between Dylan Efron and Daniella Karagach — until the pro dancer revealed the hilarious ...