I think there's Mexx in Landmark. There are lots of nice clothes shops opening up all the time, mostly in Landmark and Villaggion (both malls owned by same person!) For instance - Warehouse, Reiss, Wallis, Esprit, BCBG, Hobbs, Whistles, Mango, Massimo Dutti, etc. You're sure to be able to find something to suit your taste and budget - don't worry!