She had even dubbed the costume "Hoe Hoe Siwa" but she has since deleted that tweet.
After fans came for her over it, she has taken the time to acknowledge their anger online.
"hey guys! saw some tweets about my Jojo costume and I just wanna clarify before things get crazy- Jojo is a great friend of mine & I would never intend to sexualize HER, I literally think that anything like that is gross as fuck. It was just like a slutty schoolgirl costume, girl scout, or cheerleader to me. I totally didn't see it that way and would never want to! I LOVE Jojo and making crazy halloween costumes and she was telling me to do it! just wanted to let u know my standpoint on that before I see anything else."
Fans weren't really having it though.
Some fans did come to her defense though, claiming that the costume didn't deserve that much hate.