No stranger to a controversial design, Ugg's latest drop has already sparked conversation online, with shoppers calling the trendy shoe "iconic". Just last year, Ugg got everyone talking with the launch of its Mary-Jane boots and its shearling-lined ballet flats. Now, it's released its Quill Ballet Trainer, a take on the trendy 'sneakerina'. Exactly how it sounds, the 'sneakerina' combines trainers (or sneakers as Americans call them) and ballerina flats. This sounds pretty harmless,