The groom, 28, was dapper in a tuxedo and looked as if he had won the lottery as he posed for a photo with his new wife.
The Hit Me Baby One More Time songstress' wedding took place at her $7 million Los Angeles mansion and was attended by the likes of Paris Hilton, Madonna and Selena Gomez.
But, notably, none of her close family were invited. Father Jamie, mother Lynne and sister Jamie Lynn all missed the nuptials.
Jason Alexander, who was briefly married to the pop star in 2004 after a spur-of-the-moment Las Vegas ceremony, trespassed on her property and managed to make it inside her house, where he live streamed to dozens of worried fans.
The pair were romantically linked after they met on the set of the singer's "Slumber Party" music video in 2016.
Paris Hilton and Carter Reum are seen arriving at Britney Spears' and Sam Asghari's wedding. Photo / Getty Images
They took nearly five months to reconnect after her video shoot, Spears said in a radio interview in 2017.
"I was like, 'he was really cute, this guy was really cute,' so I called him," Britney recalled about digging up his phone number. "He's just a really fun, funny person."
"It was the humbleness that attracted me," he said in a GQ interview in June.
"She was very humble and she had a beautiful soul."
Donatella Versace is seen arriving at Britney Spears and Sam Asghari's Wedding. Photo / Getty Images
"It is with our deepest sadness we have to announce that we have lost our miracle baby early in the pregnancy," the statement read. "This is a devastating time for any parent."
The singer's marriage to Asghari is her third. Her first only lasted 55 hours.
