Stella McCartney used her father's nickname for her mother as inspiration for her latest fragrance. The designer chose to call the perfume L.I.L.Y because her Beatles dad Sir Paul McCartney constantly told her late mother Linda he loved her.

""It comes from my dad's nickname for my mum: 'Linda I love you.' The name is also from the lily of the valley ingredient - I love it as a flower, and so did my mum - it's delicate, feminine, innocent. It was part of my bridal bouquet. But I also wanted to explore its darker, more masculine side. It's a woodland flower and I wanted to capture the roots and the earthy side of it."

Stella chose to add the scent of truffles to her fragrance and perfumer Jacques Cavallier of Firmenich, who worked with her admitted it was an "unusual" choice. "The truffle was unusual, but I said OK to Stella. We used natural extract of truffle, and I actually told the suppliers we were working with that the extract was for a restaurant! I didn't want to let people know what we were doing," he said.

Stella also revealed she chose a mild scent because she doesn't like to wear strong perfumes: "I don't wear a great deal of perfume. I find it too overwhelming. This fragrance is very much about trying to leave the woman who wears it a bit of self-expression. I wanted it very pure and uncomplicated."