Celebrity Parents Britney Spears' Sons Preston and Jayden Won't Be at Wedding but Are 'Happy' for Her: Lawyer Kevin Federline's attorney Mark Vincent Kaplan tells PEOPLE that the boys "didn't want to take away" from their mom's big day By Georgia Slater Georgia Slater Twitter Georgia Slater is a writer/reporter on the Parents team at PEOPLE. People Editorial Guidelines and Rachel DeSantis Published on June 9, 2022 03:19 PM Share Tweet Pin Email Jayden James, Britney Spears, Sean Preston. Photo: britney spears/instagram Britney Spears' teenage sons are "happy" for the star as she prepares to wed fiancé Sam Asghari, but will not be present to watch her say "I do." Mark Vincent Kaplan, Kevin Federline's longtime attorney, confirms to PEOPLE that Sean Preston, 16, and Jayden James, 15, won't be in attendance on Thursday when Spears, 40, and Asghari tie the knot. "They're happy for their mom and they are hopeful that Sam and Britney are starting a great future together," he says. "It's their night and they didn't want to take away from them." A source close to the star told PEOPLE in January that the "Gimme More" singer and Asghari, 28, had been spending time with Spears' boys. "[She is] making an effort to see her kids more, and Sam is also bonding with them," the source said, noting that it's "been easier" for her to see her kids following the end of her 13-year conservatorship in November. RELATED VIDEO: Britney Spears Is 'So Excited' About Wedding to Sam Asghari and 'Wants It to Be Perfect': Source Britney Spears' Expected A-List Wedding Guests Include Madonna, Paris Hilton and Selena Gomez: Sources In December, Spears chronicled a trip to the immersive Flutter art exhibit in Los Angeles on Instagram, and shared footage of Asghari pushing Sean and Jayden on a swing. For more on Britney Spears and Sam Asghari's wedding, listen below to our daily podcast PEOPLE Every Day. Spears and Asghari, an actor and fitness trainer, were first romantically linked after they met on set of the singer's "Slumber Party" music video. Spears later revealed in a radio interview in 2017 that she and Asghari took nearly "five months" to reconnect after her video shoot. Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories. "I was like, 'He was really cute, this guy was really cute,' so I called him," she said about digging up his phone number. "He's just a really fun, funny person." The couple announced their engagement last September, months before her conservatorship was terminated in November. At the time, Asghari's manager Brandon Cohen told PEOPLE that he is "proud to celebrate and confirm the engagement." Britney Spears' Fiancé Sam Asghari Is 'Bonding with' Her Two Sons: Source "Britney is ecstatic," a source told PEOPLE after Asghari popped the question at her Los Angeles home. "Sam has been Britney's rock for years. He makes sure that she eats well and works out," another insider told PEOPLE in June 2021. "She leans on him for everything. He works and has his own life too, but is around as much as he can." In January, a source close to Spears told PEOPLE that Asghari was "bonding" with her two sons. britney spears/instagram In May, the "Toxic" singer and Asghari announced in a joint Instagram post that they had "lost" their baby, after Spears said she was pregnant in April. "It is with our deepest sadness we have to announce that we have lost our miracle baby early in the pregnancy," they wrote in the post. "This is a devastating time for any parent. Perhaps we should have waited to announce until we were further along, however we were overly excited to share the good news." "Our love for each other is our strength. We will continue trying to expand our beautiful family. We are grateful for all of your support. We kindly ask for privacy during this difficult moment," the couple concluded.