How to Turn Invisible on Poptropica
- 1). Go to the storefront that reads "Spyglass Eyewear" and enter. Speak to the eye doctor inside.
- 2). Select the option to take an eye exam. Choose the symbol facing the opposite direction of the one that the doctor is providing.
- 3). Go back outside. Scale the building and jump up to the ledge with the door.
- 4). Enter the door. Talk to the eye doctor to get the Chameleon Suit.
Source...