|Singer Janet Jackson and her Qatari businessman husband, Wissam Al Mana|
"Janet had a stress-free healthy delivery and is resting comfortably," the publicist added.
Speculation about her pregnancy surfaced last April when she postponed her Unbreakable tour.
Janet Jackson is far from the only famous face to give birth later in life. Oscar-winning Halle Berry had her second child at 47, three years ago, and John Travolta's wife Kelly Preston gave birth to her third child at 48.
Geena Davis - best known for her role in Thelma and Louise - became a mother later in life. Her first child, a girl, arrived when she was 46, followed two years later by twin boys.
But these mothers - and Jackson - are all positively young when compared to the world's oldest new mothers. There are at least three women in India who claimed to have given birth when at least two decades older than the pop singer.