Justin said: "I've worn women's jeans before because they fit me. It's not a trend; it's just, whatever works, works."
Meanwhile, the Baby singer revealed to Women's Wear Daily he is already thinking about getting married and have children.
Justin revealed: "Well, by 25 or 26, I want to see myself, like, married or start looking for a family.
"I want to be a young dad. I want to be able to have done what I wanted to do - to be successful, to do a movie or whatever. But if the time is right, I definitely want to be married by 25."
The teen pop sensation is currently dating Selena Gomez, 19, but he insists he is not in a hurry to tie the knot.
He said: "One thing - I'm not looking to get married now."
