WWD: What have you learned from L'Wren's involvement in the industry?
Mick Jagger: If you're doing a fashion line like this, you have to do so much yourself. It's a very big learning curve. You have to deal with all these very difficult people and all those trips you have to make to the manufacturers. It's a very old-fashioned industry; it's almost medieval in the way that the clothing's made in Italy. Some of them they make in piecework at home with a group of women and then they come together and it's all manufactured in a factory. It's very artisan; there's craft. I find it really quite fascinating.

WWD: How has L'Wren affected your own sense of style?
M.J.: Men's fashion is a bit of a joke, isn't it, because it's so similar to what my great-grandfather wore in so many ways. You know what I mean?

WWD: You're telling me your grandfather wore tight pants and eyeliner?
M.J.: Not quite, but he wore trousers and he wore jackets with two buttons, three buttons, one button, and he wore a tie and he wore a shirt, you know what I mean. I was in Italy in a very small hill town, my son [Gabriel Jagger, whose mother is Jerry Hall] and I had tweed jackets made by a tailor. It was exactly what my great-grandfather would have worn when he'd gone out in the hills to hunt rabbits or whatever he did. My son, who's 11, had a jacket like his great-great-grandfather. But he likes that; he loves that old fashioned, sweet style.

WWD: What do you wear now?
M.J.: I've just bought a bunch of things from Lanvin. [Alber Elbaz] is lovely. He's a great designer and a very nice chap.