The singer revealed the news on Instagram on Tuesday, posting a photo of the infant's arm on a blanket and the caption: "FUTURE ZAHIR WILBURN 9lbs 10oz May 19 2014."
Last month Ciara told WMag.com she wore her fiancé's clothes throughout her pregnancy. "I feel like pregnancy has been a great fashion challenge because you can't wear things that you used to wear and you still want to feel like who you are, " she said. "I have to pay some credit to my fiancé's closet, because I literally have worn probably all of his clothes."
Ciara and the hip-hop star, real name Nayvadius Cash, got engaged in October. Future has three other children from previous relationships.