Newlyweds Billy and Alexis Joel welcomed their first child, a baby girl, Wednesday.

Della Rose Joel was born at 2:40 a.m. weighing 7 pounds, 6.5 ounces, Joel's reps confirmed to USA Today.

The Piano Man singer began dating his wife in 2009 and tied the knot this past Fourth of July at Joel's estate in Long Island. They "surprised guests at their annual July 4th party by exchanging vows in front of their family and close friends," a rep told Us Weekly.

This is the first child for Alexis, 33, and the second daughter for Joel, 66, along with 29-year-old Alexa Ray from his previous marriage to Christie Brinkley.