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15th April 2015
07:40am BST

Billy and Alexis are expecting their first child together.
The couple, who have been dating for five years, have apparently been trying to keep the news under wraps.
A source told Radar Online: “There are lots of family photos with Alexis and her growing belly.”
The singer performing in New York last year.
“She doesn’t leave the house too often because she doesn’t want anyone to know,” the insider added.
Billy (65) has a 29-year-old daughter, Alexa Ray Joel, from his marriage to Christie Brinkley.