SHINee's Key was the victim of a hidden camera prank on 'Secretly Greatly'.

On the April 2 broadcast, 2AM's Jinwoon chose to prank his close friend Key and explained, "I want to see his leadership."

For the prank, Key, who's a well-known fashionista, is offered to do a collaboration fashion show in London with famous designer Steve J & Yoni P. The idol is then asked to try on various outfits that were purposely mixed and matched in a crazy, weird way. However, he surprised the panels as he looked extremely stylish in the crazy clothes.

On the other hand, Jinwoon brought much laughter as he also tried on the crazy outfits with Key and looked quite humorous.

Lastly, Jinwoon pretended to be trapped in a fitting room and acted to be in great panic due to a past trauma. He also suddenly revealed that he has to use the bathroom and peed in a plastic bag. Throughout the craziness, Key remained calm and helped Jinwoon.

At the end, Jinwoon revealed that it was a hidden camera prank, making Key very shocked and also disappointed that the fashion show isn't real.

Key also commented, "I'm grateful that Jinwoon called me over to prank me but I promise I'll have revenge. I hope he sleeps well today. Thanks."