Mighty Fine tees are fun and trendy. And just in time for back to school, for a limited time only the brand is offering Everything She Wants' readers 25% off its new " Double Rainbow " designs. My favorite is the Hello Kitty "Double Cupcakes, What Does it Mean?" t-shirt ($23) . Other irreverent styles feature unicorns, Sponge Bob, and the Cookie Monster. To get your discounted tee, go to WeLoveFine and enter the discount code "rainbows" at checkout (if you're a new customer you'll be asked to set up an account). The offer is valid until Sept. 12.