Prince Charles kisses Princess Diana's hand on the balcony of Buckingham Palace on their wedding day, July 29, 1981.
Jenna Bush Hager gave birth Saturday to baby Mila, the first grandchild for former President George W. Bush and first lady Laura Bush. That means former President George H.W. Bush has another great-grandchild.
President Barack Obama and Michelle Obama are seen here on their wedding day, Oct. 18, 1992, in Chicago, Ill.