Kimberly Stewart, Benicio del Toro Name Baby Girl Delilah

Credit: Danny Martindale/WireImage; Venturelli/Getty Images

Hey there, Delilah!

In an interview with USA Today published Wednesday, Rod Stewart revealed the name of his first grandchild: Delilah! The 3-day-old baby girl, born to Rod's daughter Kimberly and father Benicio del Toro on Sunday, was 22 inches long and 8 lbs 10 oz at birth.

Rod, 66, wife Penny Lancaster, and Kimberly's mother Alana Stewart were all present at the hospital. "We had everyone at the hospital to help Kimberly," Rod told USA Today. "I won't say we always agree, but we get along."

Although del Toro, 44, and Stewart, 32, are no longer romantically involved, the Oscar-winning actor has vowed to play an active role in the life of his new daughter, a source tells Us Weekly.

"Both mom and baby are doing really well," the source says. "Rod and Alana were thrilled to become grandparents for the first time and delighted at the new addition to their family."