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Mini by design for Life Ball

Diane von Furstenberg's design (pictured) demonstrates her creativity with a big splash of colour.

For 10 years, the carmaker has supported the AIDS charity event with decorated Minis that were auctioned as fundraisers. This year, they've handed the keys to three high-profile designers: Calvin Klein, Kenneth Cole and Diane von Furstenberg.

Cole has gone for a post-punk look, with the body covered in studs. "In our collection we always aim to bring fashion and function into harmony. And that is precisely what the Mini Convertible stands for," Cole says.

Diane von Furstenberg's red Mini is sprinkled with colourful lips and features a white roof and alloys. "I wanted to create something that celebrates life and reminds us of the importance of health," she says. "The red colour of the Mini expresses the awareness of HIV/AIDS, the lips represent Diane von Furstenberg. This car is bursting with life and love."

Calvin Klein designer Francisco Costa went for self-assured minimalist style. His crossover Countryman features an understated matt black body, and bears the hallmark CK signature in reflective rubber on each of the front doors.

The cars will be auctioned at the amfAR Gala in Vienna on 17 July.