Diesel's limited edition capsule collection. [Photo provided to China Daily]

Meanwhile, Lee appears in the movie with the line "Go with square face" as her square face is not considered a "pretty" woman's face.

Speaking about the campaign, she says: "We are often bound by today's social media rules, and we all have developed a similar view of what is considered the 'perfect' appearance and the 'perfect' life. But, everyone has their shortcomings and flaws which should not be glossed over. I believe those flaws are cool in themselves and can be considered as strengths."

Speaking about Lee, Formichetti says: "Diesel's brand philosophy of passion and personality fits in with her character."

Separately, Formichetti, who has just announced his departure, says the collection is his last work with Diesel.

In a related development, Renzo Rosso, the president of the OTB Group, the parent company of Diesel, who met Lee in Cannes in May, says: "We had a nice conversation and she is a lovely person. She subverts tradition, and has her own style in dealing with controversy."

The Italian fashion entrepreneur says China is a very important market for OTB as the millennials in the country are fashionable, well-informed and spend more.