Jenna Bush Hager is pregnant with her second child with husband Henry Hager—and it's a girl! The Today show correspondent and Southern Living editor made the big reveal in an adorable home video featuring her first daughter Mila (who turns 2 in April) blowing kisses to her new baby "Sissy" in Mama's belly. The new baby girl, due in August, will be the second grandchild for Jenna's parents, former President George W. Bush and former first lady Laura Bush. As for the nickname "Sissy"? It's also Jenna's favorite way to refer to her own sister, twin Barbara Bush. Loving that family tradition!