The One Direction heartthrob can't help but show off his vocal talents while he's taking a shower and likes to belt out the latest tunes.
He told TOTP magazine: "I sing all the time in the shower! I'll sing whatever's in the charts. Today I was singing 'It Will Rain' by Bruno Mars in the shower."
Niall - who is joined in the band by Harry Styles, Zayn Malik, Louis Tomlinson and Liam Payne - also revealed how his love of singing used to get him told off while he was at school.
He said: "I used to get in trouble at school, singing songs at the back of the class. A few of us would get kicked out. Then one time we bunked off school and we were caught in town about half an hour later.
We thought we were in the clear, but we ended up in deep trouble. And then the teachers called my parents!"