Zac Efron made his first-ever appearance in the Dancing With the Stars ballroom in support of his brother Dylan Efron’s semi-finals routines — and, unsurprisingly, caused a complete frenzy with fans.

Dylan, 33, and pro partner Daniella Karagach first performed a tango to Prince’s “I Would Die 4 U” during the Tuesday, November 18, live show. At the end of the pair’s routine, cameras kept panning to Dylan’s family and friends in the ballroom — where Zac, 38, sat with younger sister Olivia, 5, perched on his lap.

After Dylan and Karagach, 32, found out that they received three 9’s from the judges for their tango, they promptly celebrated from the skybox. At the same time, cameras panned back to Zac, who whispered to his mom seated next to him before starting a round of applause.

While it’s

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