Two of Lauren Betts’ siblings play basketball, including her sister Sienna, who is also on UCLA’s roster
:max_bytes(150000):strip_icc():format(jpeg)/lauren-betts-sister-sienna-040226-eb8290050adf409583eae4fa6c764a88.jpg "Lauren Betts #51 of the UCLA Bruins during the 2026 NCAA Women's Basketball Tournament on March 27, 2026 in Sacramento, California; Lauren Betts and her sister Sienna in September 2025.")
Credit: Harry How/Getty; Lauren Betts/Instagram
NEED TO KNOW
- Lauren Betts has three younger siblings: Sienna, Dylan and Ashton
- Sienna joined her older sister’s team, the UCLA Bruins, in 2025, and Dylan plays on his high school basketball team
- Though she and her siblings were born in Spain, they relocated to Colorado when Lauren was 8 years old
Lauren Betts has bonded with her siblings over a shared love of basketball — she and her younger sister are even on the same team.
"It's been super special as an older sister," the University of California, Los Angeles Bruins center told SportsCenter in March 2026. "To win games like that and have your sister on the floor with you, it's unforgettable."
The basketball star is the oldest of three siblings: Sienna, Dylan and Ashton, per her UCLA bio. She spent the first few years of her life living in Spain, where her father, Andy Betts, played professional basketball until the family moved to Colorado when she was in the third grade.
“Since my dad worked a lot, it was usually just my mom, my siblings, Sienna and Dylan, and me,” Lauren wrote in a 2026 essay for Players' Tribune.
Though little is known about Ashton, who is Andy's child from a different relationship, Dylan has also inherited their dad's affinity for basketball and plays for his high school team, per USA Basketball.
Here's everything to know about Lauren Betts' siblings, Sienna, Dylan and Ashton.
They moved to the U.S. when Lauren was 8
Credit: Lauren Betts/Instagram
According to her UCLA bio, Lauren was born in Vitoria, Spain, on Oct. 15, 2003, to Andy and Michelle Betts. The couple welcomed Sienna on Oct. 3, 2006, and Dylan on March 8, 2010. Ashton's birthdate hasn't been shared.
The family lived in Barcelona, Seville, Málaga and San Sebastian, living what the basketball star described as "a magical childhood" in her Players' Tribune essay. They moved to Colorado when Lauren was 8 years old.
Though they later divorced, Andy and Michelle maintained shared custody of their kids and lived only a few minutes apart, per ESPN.
"It was kind of a culture shock," she wrote in her 2026 essay of moving to the United States. "It’s funny, I grew up watching High School Musical, and that was like my favorite movie. And I remember going into my first day at my new school thinking, 'I wonder if it’s going to be like that?' "
Dylan is the tallest in the family
Credit: Melina Pizano/Getty
Basketball skills weren't the only thing Lauren and her siblings inherited from their father, who is 7-foot-1. By the time Dylan was 15, he surpassed his dad in height by an inch, making him the tallest member of their family.
“I think maybe a few more inches — like one or two more,” he told USA Basketball in April 2025 of his room to grow. “My growth plates are still open, I’ve heard, so maybe a few more inches.”
Sienna also plays basketball for UCLA
Credit: Justin Casterline/Getty
In November 2024, Sienna signed with the UCLA Women's Basketball team, joining her older sister on the roster.
Because she's a freshman, the Betts sisters will only have one season to play together before Lauren, a senior, graduates.
"It's really comforting to know that there's someone on the court who just like knows you for you and who's known you for your entire life," the UCLA star said of playing with her younger sister during a December 2025 episode of the In Case You Missed It with Khristina Williams podcast.
Lauren continued, "Sienna and I know what we're thinking most of the time, and we know how to speak to each other when we're both frustrated."
Sienna added that being teammates is "the closest" she's ever been to Lauren and that she was "really thankful" for the opportunity to play with her.
Dylan described his sisters as “very talented”
Credit: Jordan Teller/ISI Photos/ISI Photos/Getty; Melina Pizano/Getty
Though he won't graduate until 2028, Dylan has already begun to make a name for himself in the sport.
He was invited to join the USA Basketball's 2025 Men's Junior National Team's minicamp and has already received offers to play for the University of Washington, Purdue University and the University of California, Berkeley, per his Instagram.
Dylan has also credited his sisters for being role models for him in the sport.
“You definitely learn a lot as you watch them,” he told USA Basketball of his sisters. “They’re very talented and they obviously know a lot. Watching both of them, you just learn what it takes to be a USA Basketball player and the communication you need, everything."