The `America`s Got Talent` host and wife Mariah Carey became parents to twins Moroccan Scott and Monroe in April and the presenter is loving every minute of being a dad.

He said: "There is no `worst` part at all. Everything is amazing about fatherhood. The best part is when they communicate with you and they recognise you. It`s the best."

While Nick enjoys his work, he admits he hadn`t realised how difficult he would find going out without the twins and his 41-year-old wife.

He told America`s OK! magazine: "It`s the toughest thing in the world - leaving my family in general, not just my children, but my wife.

"Knowing that she is there with them being mommy, I don`t want to miss any of those moments!"

Nick is impressed with Mariah`s weight loss since giving birth and even believes she will be able to shed the pounds to regain the figure she had when she was 20 years old.

He said: "She is getting it off. She is about to be 1990 again!"
sections: Celebrities