Jessica Miller, the model who became the face of Calvin Klein at 17, has partnered with New York vegan-shoe brand Aera to create her own design. The collaboration stemsmed from Miller's search for vegan footwear stylish enough to impress her husband, Metallica drummer Lars Ulrich. "The Viviens were the first pair of vegan shoes I owned that my husband thought were super-sexy," she said.

Miller's debut design, the "Jessica" sandal, is a bright-emerald-green strappy satin piece standing four inches high - Aera's tallest heel yet. Unveiled at Voena gallery in Milan alongside works by Carol Rama and Rick Owens furniture, the shoe represents a marriage of luxury and sustainability. All of Aera's cruelty-free shoes are crafted in Italy using bio-based and recycled materials.

Founder Tina Bhojwani transformed Miller from vegan customer to investor, campaign face, and now designer. The team in Veneto provided technical expertise to bring Miller's vision to life. "I wanted to make a bare, über-sexy heel," Miller explained. The "Jessica" will debut at Milan Fashion Week before reaching stores in December for party season.