Justin Bieber wants another tattoo.

The 21-year-old singer, who already boasts a huge portfolio of body art, is keen to add another inking to his collection while on his whirlwind trip to New Zealand to promote his new single 'What Do You Mean?' and upcoming album.

Speaking to TV3's Story, Justin, who touched down in New Zealand two days ago, said: ''I swear I'll get one [a new tattoo] if you hook me up with a tattoo artist. I realistically have time, I'll get one tonight, seriously.''

The 'Baby' hitmaker even has a few designs up his sleeve but refused to divulge too many details about the sketch.

Meanwhile, Justin - who has had a number of run-ins with the law in recent years - has thrown himself back into his music and is on a mission to turn his life around after he went through a stage where he'd ''forgotten'' who he was.

He said earlier this week: ''I went through a point of doing it for myself and doing everything in the industry for myself and I was unhappy because being able to do stuff for others is the biggest gift of all.''

He added: ''I was robbing myself by not enjoying the moments where I should've been enjoying them and doing stuff for other people. I forgot what I was about, what my mom raised me to be. I veered off, and I got tainted.''