Billy Joel's Daughters Della Rose, 3, and Alexa Ray, 32, Join Him on Stage at MSG Show

The Piano Man was joined on stage Wednesday night by two very special ladies in his life.
During the December outing of Billy Joel’s monthly Madison Square Garden show, the hitmaker surprised the crowd with appearances from adult daughter Alexa Ray, 32, and her toddler sister, 3-year-old Della Rose.
Both were on hand for special reasons.
Alexa Ray, a musician in her own right, was there to sing — duetting with her dad on the holiday classic “Have Yourself a Merry Little Ch