Britney Spears said she is "having a baby" with her fiancé, Sam Asghari, in an Instagram post Monday.
Spears, 40, revealed a desire for more children less than a year ago, when she said she was unable to make her own birth control decisions while she was under a conservatorship, which was terminated in November.
Spears said she took a pregnancy test after she noticed her stomach was "growing" despite recent weight loss after a trip to Hawaii. At first, Asghari joked that she was "food pregnant," but Spears decided to take a test anyway.
"So I got a pregnancy test … and uhhhhh well … I am having a baby," she wrote.
A spokesperson for Spears did not immediately respond to a request for comment. Asghari declined to comment.
Asghari later posted to his Instagram account, noting that marriage and children are part of a "strong relationship" filled with love and respect.
"Fatherhood is something i have always looked forward to and i don’t take lightly," he wrote. "It is the most important job i will ever do."
Spears has two teenage sons, Sean and Jayden, with former husband Kevin Federline.
Federline is aware of Spears' post, his attorney Mark Vincent Kaplan said.
"He wishes her the best for a happy, healthy pregnancy and congratulates her and Sam Asghari as they plan for the excitement of parenthood together," Kaplan said.
Spears said she plans to avoid going out because of the paparazzi who harassed her during her previous two pregnancies, noting her experiences with perinatal depression and how little the experience was publicly discussed at the time.
"But now women talk about it everyday," Spears wrote. "Thank Jesus we don’t have to keep that pain a reserved proper secret."
In public testimony last year, Spears expressed a desire to have more children.
Spears told Los Angeles County Superior Court Judge Brenda Penny that she wanted to have her intrauterine device removed but that her conservators would not allow it.
"I wanted to take the IUD out so I could start trying to have another baby," she said in June. "But this so-called team won't let me go to the doctor to take it out because they don't want me to have any more children."
Asghari proposed to Spears after her father petitioned for the end of the conservatorship, which officially ended late last year. The couple began dating in 2016 and were engaged in September.