The heiress wants to save the world — and soon! Paris Hilton was recently spotted leaving the Kate Somerville spa in L.A. sporting the limited edition DOE Power Puff Girl Tee. In honor of the 10th anniversay of the girl power cartoon, The Cartoon Network has teamed with t-shirt designer DOE to create this adorable tee promoting a “Green” world. Unfortunately, this Power Puff Girl tee was created exclusively for celebrities and won’t be available in stores or online anywhere. Such famous faces who have been given the tee include Miley Cyrus, Hilary Duff, Hayden Panettiere, Megan Fox, Drew Barrymore and Ashley Tisdale. If you love the Power Puff Girls, you can also get a DOE vintage wash tee, $25, at babygirlboutique.com.