"Dancing With The Stars" welcomed another star in Season 34 when Zac Efron made a surprise appearance to support brother ...

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

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

Dylan Efron reacts to his brother, Zac Efron, making a surprise appearance in the 'Dancing With the Stars' ballroom ...

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

Zac Efron attended the ‘Dancing With the Stars’ season 34 semifinals to watch brother Dylan Efron, and a video of him asking ...

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

Zac Efron cheered on his brother Dylan during the semi-finals of 'Dancing with the Stars' on Nov. 18. Zac's appearance in the ...

Dylan Efron shared with E! News how special it was for his older brother Zac Efron to make a surprise appearance in the ...

Zac Efron sashayed on down to the 'DWTS' ballroom to support his brother Dylan Efron's efforts to advance from the semifinals ...

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