See Brielle Biermann's Heartfelt Birthday Tribute for Kroy: "The Best"

Kroy Biermann may be estranged from Kim Zolciak Biermann, but he still has a special relationship with his daughter, Brielle Biermann.

The Don't Be Tardy alum celebrated his 39th birthday on September 12, and Brielle paid tribute to the special day on her Instagram Stories. 

She posted a selfie of her and Kroy at an Atlanta Braves game together. "Screaming HAPPY BIRTHDAYYYY to the best padre ever!!!!" The Real Housewives of Atlanta kid captioned the post. "[Kroy Biermann] loveeee youuuu so much."

Kroy reposted the image on his own Stories, and he responded to Brielle's sweet sentiment.

"Thank you sweetheart!" he wrote. "Love you too!"

Just a few months before Kroy's birthday, Brielle and her sister, Ariana Biermann, shared emotional posts for him in honor of Father's Day.

Ariana shared a photo of Kroy giving a dog a belly rub. "So grateful for you, love you [Kroy Biermann]," she captioned the image. She also posted a picture of her posing with him.

For her tribute, Brielle shared a number of photos of her and Kroy together from over the years. "Happy Father's Day to the best dad in the world love yaaaaaaa," Brielle captioned one Story.

"We are all so lucky to have you as a father!!," she said in another.

Kroy reposted the girls' posts on his own Instagram Story. He thanked them both, and referred to them as "sweetheart[s]."

Brielle Biermann and Ariana Biermann's recent life updates

Since viewers last caught up with Kim's eldest two daughters, Brielle and Ariana have been keeping busy. 

Brielle got engaged to baseball player Billy Seidl on her 27th birthday in February 2024. Four months later, in June, Brielle shared in an Instagram Q&A that she's not in a rush to walk down the aisle, as she's always wanted "a long engagement."

Ariana has also experienced some changes in her personal life, and her living arrangement. 

Kim's second eldest daughter, who rekindled a relationship with her high school sweetheart, Hudson McLeroy, made a major move to New York City in July 2024. 

"[T]aking our love story to a new city," Ariana wrote on Instagram on July 7. "We officially live in New York!!!! [T]hank you god for making this possible and allowing me to live my dream [with] my best friend." 

A lot has changed for the Biermann sisters since they last appeared on Don't Be Tardy, but one thing remains the same: their adoration for their dad.