If you’ve spent any time scrolling through Instagram or catching up on Bravo reruns, you probably feel like you’ve watched the Biermann kids grow up in real-time. It’s a weird phenomenon. One minute, Brielle is an eleven-year-old kid on The Real Housewives of Atlanta, and the next, she's an engaged woman navigating the chaotic waters of Los Angeles and her parents’ very public divorce. It makes people wonder: how old is Brielle Biermann exactly?
She isn’t that little girl hiding in the background of Kim Zolciak’s confessionals anymore. As of early 2026, Brielle is 28 years old. She was born on February 25, 1997. It’s wild to think she’s been on our television screens for nearly two decades, which is likely why so many people lose track of her actual age.
The Timeline of a Reality TV Life
Brielle's life has been documented since 2008. That’s a long time to have a camera in your face. Most kids are worried about middle school math, but Brielle was dealing with "wig" drama and becoming a household name.
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She spent her formative years on Don’t Be Tardy, the spinoff that followed the Biermann family’s daily antics. We saw her graduate high school in 2015—remember that massive party? She was 18 then. By the time the show wrapped its eighth season in 2020, she was 23 and already a seasoned pro at the influencer game.
Honestly, the "how old is Brielle Biermann" question pops up so much because her look has changed so drastically. She’s been very open about her cosmetic journey, specifically her lip fillers, which she first got around 2016. When you change your aesthetic, people sometimes assume you’re older than you are. But nope, she’s still in her late 20s, firmly planted in that "Gen Z meets Millennial" cusp.
Growing Up Biermann: Adoption and Family Ties
A big part of Brielle’s story isn't just her age, but her last name. While her biological father’s identity has never been public knowledge, Kroy Biermann stepped into the role of "Dad" very early on.
In 2013, Kroy legally adopted both Brielle and her sister, Ariana. This was a massive moment on their show. Brielle was 16 at the time. Since then, she’s been a Biermann through and through, even as her parents’ relationship hit some major, headline-grabbing speed bumps recently.
The family dynamic has been… well, complicated. In 2025, Brielle made headlines for her appearance on the Heir Time podcast. She got real about the family’s financial struggles and her parents’ divorce. Imagine finding out your parents are splitting up via a TMZ alert while you're sitting in a Walmart parking lot. That’s what happened to her. It’s a lot for a 28-year-old to shoulder, especially when you’re also trying to manage your own adult life and a high-profile engagement.
Marriage, Careers, and Life in 2026
So, what is a 28-year-old reality star doing these days? She’s busy.
For one, she’s engaged. Brielle and minor league baseball player Billy Seidl have been a thing for a while now. They announced their engagement in early 2024, and fans have been eagerly waiting for wedding bells ever since. This past Christmas, she actually spent the holiday away from her mom for the first time in 28 years to be with Billy’s family. It’s a huge milestone. It’s that "growing up" moment where you start your own traditions.
Career Ventures
- KAB Cosmetics: She launched this beauty brand with her mom and sister back in 2019. It’s been a staple of her "influencer" resume.
- Reality TV Return: There has been endless talk about Cut Off, a series following her and Ariana as they try to survive in LA on a budget.
- Social Media: With millions of followers, she’s basically a full-time content creator.
She’s also been exploring "plastic surgery rewind" content, showing a more mature side of herself that recognizes the excesses of the past. It’s a level of self-awareness we don't always see from reality stars.
What People Get Wrong About Brielle
There’s a common misconception that Brielle is just "famous for being famous." While she definitely grew up in the spotlight, she’s navigated a career that many others have failed at. She’s stayed relevant for 18 years. That doesn't happen by accident.
People also tend to think she’s older because of her long-term relationship history and the way she carries herself. But when you look at the dates—born in '97—it puts everything into perspective. She’s just a young woman trying to figure out her own identity while her family’s drama plays out on the front page of every tabloid.
Moving Forward in the Spotlight
Being 28 is a weird age for anyone, let alone someone like Brielle. You're no longer the "young kid" of the group, but you're not exactly the "older generation" yet either. She seems to be leaning into this new chapter. Between her wedding planning and her attempts to distance herself (at least financially) from the chaos of her parents’ home, she’s carving out a path that is uniquely hers.
She’s mentioned before that her dream was to be an entertainment reporter, like Giuliana Rancic. While that hasn't fully manifested as a daily gig, her comfort in front of the camera makes it clear that she isn't going anywhere.
Whether you love her or find the family drama exhausting, there’s no denying she’s a survivor of the reality TV machine. She’s grown up, she’s 28, and she’s finally calling the shots in her own life.
If you’re following her journey, keep an eye on her social media for the upcoming wedding details. The best way to understand her current vibe is to watch her recent interviews—she's much more grounded than the "Don't Be Tardy" days suggest. You can also track her business moves through KAB Cosmetics to see how she’s handling the entrepreneur life independently.