Francisco Costa for Calvin Klein

Brazilian-born Francisco Costa is the creative director of Calvin Klein and winner of the CFDA award for best womenswear designer of March 2006 and June 2008. He has designed a beautiful, however admittedly boxy, white and grey collection for the Spring. The lime green dress seen here on Elle Macpherson is an unforgettable design of his from 2005. More recently Eva Mendes has been his muse.