NSW Premier Dominic Perrottet has admitted to wearing a Nazi uniform at his 21st birthday party.

Dominic Perrottet called a press conference this afternoon to confess to what he calls a naïve decision from his youth.

Speaking exclusively with Chris O’Keefe, the Premier said it was a terrible thing to do.

‘It was a grave mistake when I chose to wear that uniform, I wish I could go back in time and have that day back.

Image: Nine