Joe Simpson is a proud father and a proud grandfather this week.

The father of Jessica Simpson has taken to Twitter to share his excitement over the birth of Jessica giving birth to a girl, Maxwell Drew Johnson, Tuesday.

Grandpa Joe said his daughter always wanted to become a mother, and seeing her welcome her first child with fiance Eric Johnson was a joyous moment.

Joe and Jessica Simpson

“Jess dreamed since she was a young girl about being a mom,” Joe shared with his followers on Wednesday. “Dreams come true! So happy!”

On Tuesday, he Tweeted, “Proud PaPaJoe!! Beautiful baby girl… What a miracle!”

The little miracle arrived at an L.A. hospital with Eric, 32, and their families supporting Jessica, 31, who delivered the 9 lb., 13 oz. bundle.

“We are so grateful for all of the love, support and prayers we have received,” Simpson wrote on her official website after the delivery.