The Rainbow T-Shirt

The rainbow t-shirt is available only for girl characters and used to be purchasable in one of the clothing crates found in the The Explorer's Camp area. The clothing crates are now gone and have been replaced by the Clothing Tent. You can buy it there for 677 coins.

The other item in this picture is the rainbow and unicorn Skateboard which can be used by either girls or boys and can be won by playing the Magic Mystery Wagon in Presto's Grove.