Baby Grace arrived at 5:46 p.m. in California. She weighed 7 lbs., 11 oz., and was 21 inches in length.
Kevin and Christine have been married since 2004.
The happy couple are also parents to sons Hayes Logan, 16 months and Cayden Wyatt, 3. Kevin is also dad to Liam, 13, Joe, 22, Lily, 23, and Annie, 25.
Congratulations to the Costner family!