Two new clothing items for Miitomo are now available as My Nintendo Rewards as the rewards program has been updated for all regions. The first is a long-sleeved Raglan Logo T-short with the words “Gotta Be Mii” written on it and is available in 9 different colours and can be yours for 150 platinum points and the other item is a Fish Pin (I know, really?) which is available in 3 colours and can be redeemed for 100 platinum points..
They are available up until July 31st and can be obtained by either by going straight to the My Nintendo website or via the Miitomo App. you can see what they look like in the image below.
Source: My Nintendo