Miuccia Prada has designed a series of playful T-shirts addressing weighty issues such as global warming. The Obvious Classic #1 line of tees (HK$1,450 each), which were created in collaboration with architectural think tank AMO, are emblazoned with provocative 'billboards from the future'. They present a cheeky take on social and political issues and lifestyle choices we may encounter in the future - such as taking a pill to give you style or choosing the gender of your child. There are 27 unisex designs in sizes ranging from small to extra large. Available at Prada, Alexandra House, Central, tel: 2522 2989.