Zac Efron

Zac Efron has an adorable little sister named Olivia, who he has shared photos of on his Instagram. See details on his younger sibling.

[younger brother, Dylan Efron](https://www.j-14.com/posts/celebrities-with-hot-siblings-zac-efron-florence-pugh-more/), who is four years younger than the Hairspray star. The pair, who shares the same parents, are super close and have even worked together, as Dylan is the coproducer of Netflix’s [Down to Earth](https://www.j-14.com/posts/zac-efrons-down-to-earth-season-2-what-we-know-so-far/), the show that follows Zac’s pursuit of a sustainable lifestyle. [ Zac Efron](https://www.j-14.com/tags/zac-efron-467/) has a little sister named Olivia? Keep reading to uncover more on his baby sister, including her age [and parents](https://www.j-14.com/posts/zac-efron-family-meet-the-actors-parents-brother-sister/). Starla filed for divorce from David in September 2016, citing “irreconcilable differences.” Zac’s dad married his second wife a few years later. Zac didn’t introduce his half-sister to his fans until she was 1 year old.

Zac Efron posed shirtless in a Valentine's Day photo with his baby sister, Olivia — see the sweet sibling tribute.

[welcoming children of his own](https://www.usmagazine.com/celebrity-moms/pictures/celebrity-dads-who-had-children-late-in-life-w457418/), pointing out that he has “a little bit more growing to do, probably,” before jumping into fatherhood. Along with Olivia — who is [David’s daughter from his second marriage](https://www.usmagazine.com/celebrity-moms/pictures/celebrity-parents-with-big-broods-large-families-pics/) — Zac is big brother to [Dylan Efron](https://www.usmagazine.com/celebrity-moms/pictures/famous-star-families-2010182/). [his big sibling duties](https://www.usmagazine.com/celebrity-news/pictures/celeb-siblings-2013107/), but he isn’t quite ready to have a little one of his own. [his relationship with Olivia](https://www.usmagazine.com/celebrity-moms/pictures/celeb-kids-meeting-their-siblings-for-the-1st-time-photos/), who was born in 2019. The California native noted that having costar Ryan Kiera Armstrong, then 12, by his side made a big difference. [uploaded the adorable pic](https://www.instagram.com/p/CopRevnObk9/?hl=en) on Tuesday, February 14, showing a glimpse of his sweet bond with his youngest sibling. We had a pretty heavy dad-daughter scene right off the bat, and I realized I was drastically underprepared for this part,” he joked on “[But] I think that was a healthy dose to put me off of [having kids] for as long as necessary.” “I didn’t know what I was doing. I thought it would just kind of click, but no, that’s not really the case!” Zac gave Olivia a sweet kiss on top of her head. The

The California native is the eldest of three. It is publicly known that even at the height of his acting career, Efron opted to live with his brother, Dylan ...

On the day of love and friendship, Zac shared a picture with her little sister Olivia, “My valentine”. “Zac 😭 like you know what you’re doing to us right??”, or “Just when you think Zac can’t get any more wonderful, there he goes.” It is publicly known that even at the height of his acting career, Efron opted to live with his brother, Dylan Efron.

The actor is enjoying some brother-sister bonding time for Valentine's Day.

He called his sister a “little heartbreaker.” “Happy bday lil sis,” he captioned the snap. Olivia wore a flower crown in both pictures and hugged her big brother as he gave her a kiss on the head in a second photo. “My valentine,” he simply wrote in the caption. The fan added, “It will mean more to her than you know.” But it seems like “The Greatest Showman” star will have to compete to win Olivia’s heart.

In celebration of Valentine's Day, Zac Efron has once again captured the hearts of fans everywhere with his latest pic. See the sweet photo he took with his ...

[adorable photo with Olivia](https://www.eonline.com/news/1359444/these-pics-of-zac-efron-and-his-baby-sister-will-make-you-fall-even-more-in-love-with-him) in honor of her birthday on Dec. [High School Musical](https://www.eonline.com/news/high_school_musical) alum posted a photo to Instagram of himself reading to his 3-year-old half-sister, [Olivia](https://www.eonline.com/news/1359444/these-pics-of-zac-efron-and-his-baby-sister-will-make-you-fall-even-more-in-love-with-him). But they're not only ones being spoiled with love on Valentine's Day. Meanwhile, a chimed in with, "Just when you think Zac can't get any more wonderful, there he goes." "Zac, like you know what you're doing to us right??" Alongside the [pic](https://www.instagram.com/p/CopRevnObk9/), he simply wrote, "My valentine."