Hi! I'm in Seoul right now. I thought COEX mall is very huge, but it's not. Only has 1 floor, the 2nd floor used for convention and exhibition halls. Coex has a lot of foodcourts and restaurants. The cute2 stores for girls are Sanrio and Ani Land. Foreign brands here are very expensive and I have nt found a local clothes store that I like yet. I walked around in less than 2 hours and left.