#CurtainCallChallenge (Patreon)

Curtain Call Challenge or Curtaincall Challenge is an often NSFW fan art trend shared under the hashtag #CurtainCallChallenge in which artists on Twitter draw characters, particularly their original characters, in increasing  states of undressing. The challenge consists of drawing the character in  four types of outfits, labeled "Pocket," the most modest; "Tent,"  usually high-waisted shorts and a tucked-in button-down shirt;  "Curtain," showing the character with just a button-down shirt, and  "Curtain Call," showing the character with the shirt opened, revealing  their undergarments underneath.

Origin

On March 13th, 2022, Twitter user @vvarstromig posted the template for the "Curtain Call Challenge," drawing four  pictures of his OC. The tweet gained over 5,500 retweets and 56,000  likes (shown below).