Dylan Efron is turning Dancing With the Stars season 34 into a family affair.

Days before the show’s Dedication Night, Efron, 33, shared a glimpse of his and partner Daniella Karagach’s rehearsals alongside his 5-year-old sister, Olivia.

“Please welcome the newest member of Team DaDy, my lil sister Olivia,” Efron wrote via Instagram on Sunday, October 12. “She’s quickly become 2nd best dancer on the team and by far the cutest. Team DaDy-O. #DWTS.”

Efron shared a series of sweet photos of Olivia taking on the dance floor, including a pic of his sister sitting in his lap while wearing ballroom shoes. In one image, Olivia gave Efron a kiss on the cheek as he held her beside Karagach, 32.

“OMG!!! Her tiny ballroom shoes 🥹😭✨💘,” pro Jenna Johnson wrote in the comments section, while fellow season 34 contestant Danielle Fishel added, “STAWP!!! I love her sm.”

Dylan and Kargach are set to hit the ballroom floor on Tuesday, October 12, dancing a contemporary to brother Zac Efron and Zendaya’s “Rewrite the Stars” from The Greatest Showman — a performance the Traitors winner is dedicating to Olivia.

Ahead of the number, Dylan teased the routine after a Quickstep to Cars‘ theme song “Life is a Highway” during the show’s Disney Night.

“Everyone thought you were gonna do High School Musical tonight,” cohost Julianne Hough said, while Dylan replied, “I couldn’t — yeah, I have something special for next week, if I’m still here.”

Dylan Efron is certain that his friend Justin Bieber will be pleased with his Dancing With the Stars tribute performance. “I think he’ll be stoked,” Efron, 33, exclusively told Us Weekly after the Tuesday, September 30, live show. “I think he loves it.” Efron and pro partner Daniella Karagach performed a foxtrot to Bieber’s “Yukon” […]

After a September taping of DWTS, Dylan credited his performance — and scores — to Olivia, who was in the audience. (Dylan and Karagach earned a combined score of 23 out of 30 from judges Carrie Ann Inaba, Derek Hough and Bruno Tonioli during the show’s TikTok night.)

“That’s the best. She gives me, like, more confidence every time I see her out here,” he gushed to Us Weekly during an exclusive interview, noting that his sister taught him a few dance moves “right before the show.” He quipped, “[She was] my first dance lesson.”

When news broke that Dylan was cast on this season of DWTS, Dylan exclusively told Us that his whole family gave their stamp of approval. (Father David Efron shares daughter Olivia and son Henry with his second wife, Jenny.)

“My dad is super excited,” Dylan shared in September. “He has little kids, four and five. They’re all super excited. My mom was honestly just shocked. She’s just like, ‘Where’d this come from?’ My brother is supportive.”

Dylan noted that Zac went to a DWTS live taping “a long time ago” and loved the experience. “He’s like, ‘The best part is going to be those live shows.’ He was saying, like, it’s such a good feeling,” Dylan recalled.

As for whether his family would be seen in the ballroom cheering him on, Dylan teased, “We’ll see.” He went on to shut down the idea that there would be a nod to High School Musical in the dances, with Karagach noting, “We’re standing our own. We’re going to do our own thing.”

Dancing With the Stars airs on ABC and Disney+ Tuesdays at 8 p.m. ET.

Prove your DWTS fandom with Us Weekly and Bracketology.tv! Compete against other fans and Us editors in the Bracketology DWTS fantasy league this season to predict which pairs will make it to the finale for season 34. Get access to exclusive content, stats and a chance to win prizes. Join the league for free today!