Posted by Jenny SmithCelebrity looks have been a huge driver for fashions over the past decade, with the likes of Sarah Jessica Parker inspiring plenty of trends, according to an expert.Francesca Moser, senior fashion assistant at SHE magazine, said that the Sex and the City star had a "massive" impact, while Sienna Miller was a major proponent of the boho chic style.Indeed, the Guardian's Naomi Wolf recently named SJP's alter ego Carrie Bradshaw as one of the icons of the decade.In addition, TV programmes like The OC and Gossip Girl helped to bring "preppy and geek chic" trends to the forefront, she suggested."The modern generation is strongly influenced by celebrities such as sports stars, actresses and pop stars, so we can't deny the fashion power of these new icons," Ms Moser added.She named Lady Gaga, Cheryl Cole and the Beckhams as big trend-setters at the moment, while Kate Moss and Madonna have also continued to be big in the fashion world with their collections for high street stores.(c) 2008 Adfero Ltd.