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

Zac Efron and his brother, Dylan Efron, have a tight bond with their parents, Starla and David. Here's everything to know ...

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

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

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

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

Dylan Efron is eyeing the Mirrorball Trophy. After his brother, Zac, supported him during the semifinals, Dylan tells PEOPLE ...

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

After Zac Efron made a surprise appearance for little brother Dylan Efron's Dancing With the Stars semifinals performance Nov ...

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

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

The 'Dancing with the Stars' contestant opened up about “best friend” Booey in honor of National Senior Pet Month ...