Marks & Spencers is no ordinary supermarket. It's a retail store with a food range (and series of TV adverts) that have the nation drooling, a home and fashion department that represent quality and a clothing department for women, men and kids that have shoppers cooing. Add to that a star-studded selection of celebrity ambassadors, and you've got a very special supermarket. It may have once been the place where your mum shopped, but now we all slightly wish we could live on Marks & Spencers food, and buying gifts for men is a dream here (hello, Ryan Reynolds modelled for them!), with their accessories, chunky knits and fun gadgets. M&S even got cool points for asking the singers on 2011's X Factor to sing on their festive adverts. Other celeb fans include Pippa Middleton, the cast of Harry Potter, Cheryl Cole, Audrina Patridge, The Saturdays and Myleene Klass (who modelled for the brand along other celebs like Lisa Snowden and Twiggy).