Oritsé Williams
The JLS star and girlfriend Aimee Jade Azari.Getty

JLS star Oritsé Williams has become a first-time father after his girlfriend gave birth to a baby boy.

Aimee Jade Azari gave birth to the couple's son on 24 August but they waited to announce the news to fans.

"So happy to announce that on Sunday 24th at 1.49am we welcomed our precious baby boy, weighing 6lbs 3 to the Azari-Williams Family," the blonde beauty told her 16.1K Twitter followers.

"So in love with our precious boy."

Williams, 27, later took to social media to express his delight.

Fans and fellow celebrities quickly flocked online to congratulate the new parents.

Williams is the second of the X Factor stars to become a father. Bandmate Marvin Humes welcomed daughter Alaia-Mai with his wife Rochelle last year, while JB Gill recently announced that his wife Chloe Tangney is also expecting a baby.