This magical I Solemnly Swear T-Shirt is an enchanting way to show off your Harry Potter love and flair for steller style. Perfect for snuggling up with a movie marathon, showing off your fandom at a convention, or conjuring up a birthday gift, this sassy "I Solemnly Swear That I'm Upto No Good" top is sure to add a bit of mischief to your wardrobe!