Her height is 5'9.5" (177 cm). Bust: 83 cm, Waist: 60 cm, Hips: 88 cm.
She has blonde hair and green eyes.She was co-winner (along with Jeanna Krichel) of the Elite Model Look 2003 in Germany. Cordes placed among the top five at the international final of the contest in Singapore. She was nominated for the German "New Faces Award 2005." In 2004 she modelled in fashion shows for Prada, Jil Sander, and Calvin Klein.
Cordes has appeared on the cover of the Russian language version of Vogue which was photographed by Karl Lagerfeld in April 2005. The same month she participated in advertising for Chanel. The following August Walter Chin captured her image for the 25th anniversary jubilee issue of German Vogue. Cordes was photographed by Carter Smith for American Teen Vogue and also appeared in Harper's Bazaar.
She is represented by Model Management (Hamburg), Elite Model Management, Elite Paris, Elite Milan, Select (London, England), and Elite Barcelona.