I definitely in love with stuffs which related to bear, such as Rilakkuma. But this bear on his shirt, mixed two things which I really love, bear and neon colours. Sungmin was spotted wearing a cute t-shirt from Japanese brand called Graniph.
Well, I think you can't see the bear pic on it clearly, but I'm sure that the shirt is from that brand. This brand has a lot of cute bear printed tees, and they are made of cotton, so it'll be so comfy to wear. The price of this t-shirt is JPY 2,500 or approximately $32. Here's the buy link for this item click it!
Credit pic : KBS COOL FM RADIO, http://loveinvainsm.com/, Sup3rJunior.com