R&B singer Ciara celebrated Father's Day with her husband-to-be by sharing an adorable snap of their new son on Instagram.

The 28-year-old Love Sex Magic singer welcomed her first child with her rapper fiancé Future last month, and now the star has shared a picture of their little bundle of joy.

The photo shows four-week-old Future Zahir Wilburn lying on his back and wearing a shirt with his dad's name embroidered on the front.

The caption reads: "Hey Dad aka Big @Future. Baby Future Loves You. #HappyFathersDay (sic)."

Ciara and Future, real name Nayvadius Cash, became engaged in October (13).

© Instagram/ciara