TV presenter Declan Donnelly has said he is "head over heels" as he announced the birth of his first child with wife Ali Astall.

He posted on Twitter: "Ali and I are thrilled to announce the arrival of our baby girl, Isla Elizabeth Anne, who was born just after 9 o'clock this morning.

"Mother and daughter both doing well, Dad is head over heels! D x."Donnelly, 42, also shared a picture of his baby daughter's hand wrapped around his finger.

The Britain's Got Talent host married Astall, his former manager, in 2015, and they announced they were to become first-time parents earlier this year.

The new arrival comes days after it was confirmed that Donnelly will head to the Australian jungle to present I'm A Celebrity... Get Me Out Of Here! later this year alongside Holly Willoughby.

This Morning star Willoughby is filling in for Donnelly's long-time presenting partner Ant McPartlin, who is taking a step back from TV commitments until next year.

McPartlin admitted to drink-driving after an incident in March which saw him banned from the road for 20 months and fined £86,000.

Ant and Dec have presented the reality programme together since it began in 2002.