How mommy-to-be Janet Jackson marked turning 50

Turning fifty is a big milestone, but when it comes to Janet Jackson, it is not a bigger deal than her recent pregnancy.

According to a source, the pregnant musician celebrated her birthday with a low-key affair with only close friends and her husband Wissam Al Mana, reports E! Online.

The 'Unbreakable' singer is expecting her first child with Mana after working with a fertility specialist.

News of Jackson's pregnancy broke earlier this month, when another source said she was in her second trimester.