Career
She modeled briefly in Milan, before moving to New York and signing with the Next agency. She also did campaigns for Versace, Christian Dior, Valentino, Armani Exchange and was one of the first models of Gucci by Tom Ford. Grenville has made cameo appearances in an episode of the British comedy Absolutely Fabulous and in the film 54.
She was also featured in the 1998 Pirelli calendar.