I was thinking recently, If the body really is the new dress, as some are saying - with women buying boobs, butts, faces - then who needs a dressmaker? So I started designing spring like a plastic surgeon - everything stretchy and nude. But after three weeks, I was so bored with myself and the world, I began adding diamond butterflies and chiffon and colors. I realized that fashion is not about second skin. It's not the perfect white shirt or camel jacket. What women need is a dream.

I like the dream, like fantasy dresses. Women can dream at 9 in the morning and at 10 o’clock at night, it doesn’t matter. I think it is also important for me to make it pragmatic and practical and wearable. I always say, 'If you can’t eat it, it’s not food, and if you can’t wear it, it’s not fashion, it is something else.'

H&M approached us to collaborate, and see if we could translate the dream we created at Lanvin to a wider audience, not just a dress for less. I have said in the past that I would never do a mass-market collection, but what intrigued me was the idea of H&M going luxury rather than Lanvin going public. This has been an exceptional exercise, where two companies at opposite poles can work together because we share the same philosophy of bringing joy and beauty to men and women around the world.

When I was either 7 or 8 years old, I did a sketch every day of my teacher and what she wore. At the end of the year, I gave her the sketchbook. For me, the sketching of dresses was about fantasy and dreams.

Women can dream at 9 in the morning and at 10 o'clock at night - it doesn't matter.

I love to travel inside my head, take journeys toward the unknown, meet new people, dream.

In fashion we're lucky, we make dreams come true.