How exciting! Billy Joel, 66, and his wife Alexis Roderick, 33, welcomed a new baby girl into the world on Wednesday, August 12. This is the couple’s first child together — we just know they’re so elated to add this tiny addition to their happy family! Click through to find out what they named their new daughter! Billy and Alexis went untraditional, but kept things completely lovely when naming their baby girl. Welcome to the world, Della Rose Joel ! Della was born at 2:40am in New York (poor mama!), and weighed in at 7 lbs., 6.5 oz. A sweet and healthy little girl!