In the world of Hollywood glamour, it’s often the quiet moments that tell the most heartfelt stories. For global superstar Zac Efron and his adventurous brother, Dylan, some of their most cherished roles are not on the screen but at home as doting big brothers to their youngest sister, Olivia Efron. While her famous brother might sing about rewriting the stars, Olivia has effortlessly rewritten what family means to the Efron brothers, bringing a new, joyful dynamic to their lives.
This little girl, who captured the public’s attention during a sweet dedication on Dancing With the Stars, is growing up at the center of a loving and blended family. Her story is one of second chances for her father and a beautiful opportunity for her older brothers to experience the joy of being guardians, playmates, and role models. Let’s pull back the curtain and meet the wonderful people who surround Olivia Efron.
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Olivia’s Immediate Family: Dad, Mom, and Little Brother
Olivia Efron was born on December 25, 2019, which makes every birthday a festive celebration. Her father is David Efron, an electrical engineer who originally met Zac and Dylan’s mother while they were both working at a power plant. After his first marriage ended, David found love again and married his second wife, Jenny, who is Olivia’s mother. While Jenny prefers to stay out of the public spotlight, she is the matriarch of this branch of the Efrons.
The family expanded again when Olivia became a big sister. Her parents, David and Jenny, welcomed a son named Henry Efron sometime after Olivia’s birth. This makes Olivia and Henry half-siblings to Zac and Dylan, but if the brothers’ social media posts are any indication, the word “half” is never used—they are simply siblings.
The two youngest Efrons are often seen together in photos, whether they’re at the circus, playing at the beach, or going on hikes with their older brothers. Olivia’s immediate family unit is a classic, loving household where she is growing up alongside her little brother, doted on by her parents and her superstar older brothers.
The Brotherly Bond: Guardianship and Guiding Lights
The relationship between Olivia and her older brothers, Zac and Dylan, is particularly special given the significant age gap. When Olivia was born, Zac was 32 and Dylan was 27, instantly transforming them into incredibly proud and protective big brothers. Dylan once beautifully expressed his feelings about this surprise role, saying, “I wasn’t expecting to be a big brother. She’s 5, and I’m 33. But immediately I was inseparable from her. She’s everything to me.” He even mentioned that he wants to “show her to live her life with confidence,” taking the lessons he learned from Zac and paying them forward.
Zac is just as smitten with his little sister. He has introduced her to his millions of Instagram followers, calling her his “little heartbreaker,” and has shared adorable photos of them together, including one of him reading to her on Valentine’s Day, which he simply captioned, “My valentine.” The brothers even have a friendly rivalry about who Olivia prefers. In a playful Instagram post, Dylan once boasted, “Sorry Zac, I’m winning ❤️,” after Olivia said she loved him because he was “so strong to pick me up.”
This beautiful dynamic came to the national spotlight in October 2025 on Dancing With the Stars. For a “Dedication Night,” Dylan chose to honor Olivia with a contemporary dance performance set to “Rewrite the Stars”—the song from The Greatest Showman that was originally sung by Zac and Zendaya.
Dylan and Olivia Efron dancing to their brother’s song is perfection. This is what Dancing with the Stars is all about. ❤️#DWTS #DWTS34 pic.twitter.com/k1ODATMUkr
— Drew Smith (@DrewDisneyDude) October 15, 2025
The performance was a double tribute, celebrating both his cherished little sister and the older brother who first showed him the way. In his rehearsal package, Dylan shared that Zac always took care of him, and he wants to do the same for Olivia, perfectly illustrating the cycle of love and guidance in the Efron household. Through it all, Olivia Efron is growing up surrounded by an incredible tapestry of love, proving that family is the greatest show of all.
