Dyan Efron 's stellar looks over the years will make you wanna DANCE! Here is a 17-year-old version of a shaggy Dylan rockin' ...

"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 ...

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

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

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

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

Zac Efron finally visited "Dancing With the Stars" to support his brother Dylan — and it seems like he wasn't exactly sure ...

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

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

Fans completely lost it when Zac Efron popped up at the Dancing With the Stars ballroom to cheer on his brother Dylan Efron.