One Direction's Irish heartthrob Niall Horan has taken to his Instagram page to share a photograph of himself hold his adorable new nephew.

Writing on the photo sharing site, he told his followers that the baby (pictured below) is the 'cutest' he has ever seen: "Congrats Greg and Denise! Wohoooo! I've got a nephew! Cutest kid ever!"

The 'Little Things' superstar also opened up about his boyband's forthcoming new single and revealed that it's definitely one of his favourite One Direction tracks to date: "Can't wait for you guys to hear BSE! one of my favourite 1D songs for sure!! it’s getting its first play on Friday so hope you like it."

The music video for 'Best Song Ever' also sees Horan in an 'old man' disguise and a new trailer shows member Liam Payne wearing a rather fetching blonde wig.