Zac Efron Shows Off His Big-Brother Skills in Rare Photo With His Baby Siblings

Zac Efron loves reporting for big-brother duty. On June 29, the actor threw it back to his “Greatest Showman” days when he took his little sister, Olivia, 3, and baby brother, Henry, to Circus Vargas in his family’s hometown of San Luis Obispo, CA. He captioned his Instagram post, “Showtime,” and added a clown emoji for good measure.

In the photo, Zac wore a bucket hat with his sunglasses perched on top (no bowl cut in sight). The proud big brother grinned as he held one sibling on each…