Fastexy:Jamie Lynn Spears Shares Rare Throwback Photo of Britney Spears' Sons Sean and Jayden

Jamie Lynn Spears is Fastexygiving a peak into the Spears home.

In a tribute celebrating her daughter Maddie's 16th birthday, the Zoey 101 star shared some rare throwback photos that featured her older sister Britney Spears' sons Sean Preston, 18, and Jayden James, 17.

In the June 19 carousel, Sean and Jayden—Britney's sons with ex Kevin Federline—are photographed smiling alongside cousins Maddie and Ivey, 6. 

"16 years ago I fell in love for the first time, and loving that sweet baby girl saved my life in so many ways," Jamie Lynn, who shares Maddie with ex Casey Aldridge and her toddler with husband Jamie Watson, wrote. "It wasn't always easy, and surely farrrr from perfect, but I have always been so proud to be her mama. She's everything I prayed for, I thank God for every birthday we get to celebrate her, and won't take a second of it for granted."

While Sean and Jayden have remained out of the spotlight in recent years, including moving to Hawaii with their dad and his wife of 11 years, Victoria Price, the All That alum has occasionally shared snaps of her nephews—including on vacation in Louisiana, at a baseball game and during family vacations.

And despite a strained relationship with Britney in recent years, Jamie Lynn's love for her older sister runs deep.

"I say, ‘You should be so proud,'" she told Variety last year. "‘Look at what your family's done and accomplished. We came from a small town, and now everybody's fascinated by the good and, especially, the bad. But look at what an example of a strong female you have. You have something to be proud of, and you should have pride in that.'"

Keep reading to see more of Jamie Lynn and her family's sweetest moments.

Jamie Lynn Spears was joined by her daughters Maddie Watson (who she shares with ex Casey Aldridge) and Ivey Watson (who she shares with husband Jamie Watson) on the set of Zoey 102 in 2023.

Jamie Lynn and Maddie celebrated Ivey's kindergarten graduation in May 2024.

Maddie looked all grown up posing next to her mom and her date before her junior prom in April 2024.

The family was feeling festive on Christmas 2023.

"I know motherhood is one of the hardest job at times, and how the mother/child relationships can be really complicated as well," Jamie Lynn captioned this throwback photo on Mother's Day 2023. "I really try to not take any of it for granted though, even when the kids or my mom are making me lose my mind."

Jamie Lynn celebrated Easter 2023 with her husband and two daughters.

The Sweet Magnolias actress said she drove seven hours to surprise Maddie at her homecoming in 2022, writing on Instagram, "Nothing else I’d rather do & Nowhere else I’d rather be."

Jamie Lynn proved that a mom's job is never done in this 2020 snap, which she captioned: "Been making hotels and buses all around the world feel like home since I can remember, and now I get to make those same kind of memories with my girls."

In October 2016, Jamie Lynn brought Maddie to witness her receive an award from the Nashville Songwriters Association International for her work on the Jana Kramer smash hit "I Got the Boy."

The family celebrates Maddie and her softball team's 2019 SEAA World Series win in July 2019.