The morning show entertainment reporter shared the exciting news on Instagram on Monday morning.
"Congratulations to my beautiful daughter Becky and her handsome husband James on the arrival of their little princess Isabella Rose," he wrote, finishing with the hashtag: 'very proud granddad'.
Multiple fans took to the comments to congratulate Dickie on his beautiful new role as a granddad.
"Congratulations to you and your lovely family - I’m sure that this is the beginning of a very special chapter of their lives and yours ✨," one wrote.
Another fan said, "A Grand Dickie! Congratulations - she’s a lucky little girl x".
Wilkins, 63, is a dad to five children: sons Adam, Nick and Christian and daughters Rebecca and Estella.