The 42-year-old took to Twitter shortly after Dec and Ali announced the birth of Isla Elzabeth Anne – revealing he was in love already.
Describing himself as her uncle, he wrote: “Welcome to the world baby Isla Elizabeth Anne. Can’t wait for cuddles. I love you already!! Uncle Ant xxxxx”
Ant has been best friends with Dec since they were 13 and despite pulling out of I'm A Celebrity this year as he battles his demons, the pair have remained as close as ever.
This afternoon, Ant's co-star Dec revealed that he and wife Ali Astall had welcomed their first child.
The presenter, 42, broke the news today that he has become a dad to a little girl, revealing he was "head over heals" and that his wife, 40, was "doing well".
Writing on the social media account he shares with Ant, he told fans: "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.
He added: "Mother and daughter both doing well, Dad is head over heels! D x"
Following their baby news today the couple were inundated with comments from delighted fans and their famous friends.
Rochelle Humes wrote: “CONGRATULATIONS to you both, so happy for the pair of you. Can’t wait to see her."
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