The Super Bowl LV runner-up and his 25-year-old fiancee announced the birth of their baby girl with a sweet photo on Sunday, February 21. Sterling Skye Mahomes was born on February 20 and both parents shared the same photo of Brittany cradling the newborn. She had a cute necklace that featured the baby girl's name as the little girl grabbed daddy's finger. “Sterling Skye Mahomes. 2/20/21 6lbs 11oz,” she wrote alongside the photo of the tiny hand.