Zac Efron is coming alive with big brother duties.

Case in point? The Greatest Showman star's latest family outing in his hometown of San Luis Obispo, Calif.

On June 29, Zac shared a photo of himself carrying his 3-year-old sister Olivia and baby brother Henry in his arms during a visit to the greatest show: Circus Vargas. The High School Musical alum, 35, captioned the smiley snapshot on Instagram, "Showtime."