When Jack’s baby arrives, Sharon Osbourne is declining the title “granny” and prefers to be referred to as SHAZZA instead.
Lisa Stelly, Jack’s fiancée who is an actress, is due in April.
Sharon and her Black Sabbath rocker husband Ozzy will welcome their first grandchild.
However, Jack, 25, remarked: “She wants to be called Shazza, not granny — but it sounds like a smoky old barmaid!”
At 59, Sharon expressed: “Our family is expanding, and I cherish that. It’s truly a blessing — a joy.”