Billy Joel Introduces Daughter Della Rose

The wide-eyed little one, who arrived early Wednesday morning in New York, is pictured snuggled in her mother's arms

Meet the littlest uptown girl.

Billy Joel and wife Alexis introduce their newborn daughter, Della Rose, in a sweet snapshot shared Thursday night at his Philadelphia show.

The wide-eyed little one, who arrived early Wednesday morning in New York, is pictured snuggled in her mother’s arms.

Della is the second child for the singer-songwriter, 66, and the first for his 33-year-old wife, an accomplished equestrian.

“Billy is thrilled to become a dad again,” a source told PEOPLE in April.

Myrna M. Suarez/Getty; Inset: Theo Wargo/NBC/Getty

Prior to Della’s arrival, the couple tied the knot during their annual Fourth of July party at Joel’s Long Island estate.

The couple “surprised guests by exchanging vows in front of their family and close friends,” the singer’s spokeswoman told PEOPLE at the time.

Jeff Sclock

Joel is already dad to singer/songwriter Alexa Ray Joel, his 29-year-old daughter from his previous marriage to Christie Brinkley. “Celebrating the arrival of my precious little sister this week,” Alexa Instagrammed Thursday.

— Anya Leon and Sarah Michaud