Britney Spears

Britney Spears is pregnant, the 40-year-old pop star announced on Instagram on Monday.

Spears wrote in her post that soon after traveling to Maui with her fiancée Sam Asghari, she began to gain weight.

She wrote, "So I got a pregnancy test ... and uhhhhh well ... I am having a baby."

The news of the pop star's pregnancy comes months after a judge ended her 13-year guardianship following a highly publicized legal battle with Spears' father.

This arrangement meant that Spears had very limited control over her life and the decisions she could make—including her career, finances, and health.

The singer was placed under his tutelage in 2008 after suffering from mental health issues.

In a blistering testimony last June, she told a Los Angeles Superior Court judge that she wanted to have another child, but was forced to have an IUD as per her guardianship.

Spears is already a mother to two boys: 16-year-old Sean Preston Federline and 15-year-old Jayden James Federline from her previous marriage to Kevin Federline.

She ended her post on a positive note saying, "This time I am doing yoga every day!!! Spreading lots of happiness and love!!!"

Spears wrote Monday that she would spend less time going out to avoid the paparazzi and noted with her previous pregnancies, she suffered from perinatal depression.