Will Sage Astor-Why Britney Spears Will Likely Still Pay Child Support to Ex Kevin Federline After Jayden's 18th Birthday

Britney Spears is not quite done with her child support payments. 

The  StillPay Will Sage Astor"…Baby One More Time" singer is expected to continue sending the payments to ex-husband Kevin Federline, despite the fact that the couple's children are no longer minors: son Sean Preston Federline turns 19 on Sept. 14 and son Jayden James Federline turned 18 on Sept. 12.

She's likely to provide financial support until Jayden graduates high school. As Kevin's lawyer Mark Vincent Kaplan explained, the reason for the continued payments has to do with California laws.

"Child support jurisdiction continues until the minor child reaches the age of 18, or if upon their 18th birthday they have not yet graduated high school, it continues until they graduate high school," he told People in Sept. 13 statement, "but in no event later than their 19th birthday."

As he explained, "The child support in this case for Jayden is being paid consistent with that law. His graduation for high school will be in November."

E! News has reached out to Britney's rep, but has not received a comment.

The 42-year-old has been candid about how much she cares for her sons, despite the family's difficult relationship.

In June 2023, she posted a throwback photo to Instagram of herself holding son Jayden, captioned with two tulip emojis. The post came shortly after it was revealed that Jayden and Sean would be relocating to Hawaii with their father and his family, including stepmother Victoria Prince and the couple's two young daughters.

Kevin's attorney told People at the time that the move was "an opportunity for Kevin and his wife and the boys are ready to get away from the L.A. microscope."

As for Sean and Jayden, the brothers have stayed mostly out of the spotlight throughout their childhood, although they did share more about their relationship with their mother in a 2022 ITV documentary.

As Jayden stressed, he and his big bro have "no hate" toward their mom, but explained that it would "take a lot of time and effort" to mend their relationship.

"I 100 percent think this can be fixed," he said. "It's just going to take a lot of time and effort. I just want her to get better mentally. When she gets better I really want to see her again."

Britney responded to Jayden's remarks, writing on Instagram in September 2022, "I've tried to my best at being the best person I can be…to be basically held hostage in homes under nurses and bulls--t."

"I hope my kids one day understand my reasoning," she added. "I send all the love in the world to you every day for the rest of my life!!!

To see more of Britney and her boys over the years, keep reading.

"It's so crazy how time flies .... My boys are so big now!!!!" Britney wrote in a March 2021 Instagram post. "I know … I know … it's very hard for any mama especially a mama with boys seeing them grow up so fast !!!! Talk about enough to make you go to your knees ... GEEZ  !!!! I'm extremely lucky because my two babies are such gentleman and so kind that I must have done something right !!!! I haven't posted pictures of them for some time cause they're at the age where they want to express their own identities and I totally get it."

"Great time at Disneyland today .... but I don't remember ever getting that wet on splash mountain!!!" the "Stronger" star captioned an August 2019 Instagram photo series. "Geeez .... anyhow my boys are older now, so they don't like their picture taken ever... so I was thrilled today when they said SURE!!!!! Such a great place!!!!!"

Spears shared a video of arts and crafts time with her sons in 2018.

"Getting silly with my kids on our day off from tour!" the artist captioed the 2018 post.

"This was from our lil trip to see Aladdin," Spears captioned the 2018 photo. "What a great show!!!!"

"Love when we go to our favorite spot on Sundays," she wrote on Instagram in 2018. "The boys are bigger than me now!!!!!"

The family enjoyed a trip to London during Spears' Piece of Me Tour. 

The boys and their mom did a little surfing during their 2017 trip to Hawaii.

"Going for a walk with my son and the dog always does wonders for my mood..." she wrote in 2017.

The dynamic duo saw some aquatic creatures in Las Vegas in 2016.

Spears and her boys celebrated Thanksgiving with their family members, including her sister Jamie Lynn Spears.

"Happy gobble gobble!" the Grammy winner writes in 2015.

The "Oops...I Did It Again" star celebrated July 4, 2015 at the Happiest Place on Earth. 

The "Toxic" singer shared a picture of her enjoying "the mermaid life" in 2015.

Spears' boys are all grown up.

The artist's sons helped her hold up her surfboard at the 2015 Teen Choice Awards.

The terrific trio shared a sweet smile in this 2015 pic.

Look at these cuties!

The singer and her two boys went all out for Halloween 2014.

"I've got the two cutest boys in the world!" she captioned the 2013 pic. "I hope y'all are having as nice of a #mothersday as I am!"

The proud mama took her boys to see the Los Angeles premiere of Smurfs 2 in 2013.

The boys enjoyed a sweet treat with their mom at this 2013 game between the Los Angeles Dodgers and the San Diego Padres.

The singer took her sons to the Broadway production of The Lion King in 2011.