Brittany Mahomes turned husband Patrick Mahomes' Sunday Night Football game into a family affair. Mahomes, 30, wore an all-white outfit to the Kansas City Chiefs' Sunday, September 21, away game against the New York Giants while posing with her father-in-law, Pat Mahomes Sr. Her stylish game day look featured a white zip-up jacket over a white undershirt, paired with matching white pants. For a pop of color, she wore fire-red boots, choosing to accessorize with a small white purse featuring red roses.