The London Olympics are set to start on July 27tH and Modamob has your shopping guide. Topshop is one of the most popular stores in the UK. The high street fashion store is a favorite among Kate Moss and fashionista Olivia Palermo. Next stop is River Island. This trendy store is so popular, Rihanna is in talks to design for the line. Selfridges department store is a must see. Celebs love this store. And last but not least, make sure to stop by Primark for some inexpensive trendy looks.