This wasn't on Halloween, but Kylie Jenner got major backlash in 2019 for throwing a Handmaid's Tale-themed party for BFF Anastasia Karanikolaou. Many on social media called the festivities tone-deaf, considering the show's subject matter.
Brian Grazer was called out on Instagram for his Indigenous person costume, with followers writing things like, "Not woke. If you plan on going as a total douche - you have the right costume!" and "Not cool."
Hilary Duff apologized after she and boyfriend Jason Walsh dressed as a sexy pilgrim and an Indigenous person in 2016. "I am SO sorry to people I offended with my costume. It was not properly thought through and I am truly, from the bottom of my [heart emoji] sorry."
Chrissy Teigen and John Legend didn't catch much backlash for their costumes back in 2008, but they've since been filed as "offensive" on numerous websites in the years since.
Nicky Hilton was blasted for wearing this stereotypical Indigenous person costume in 2015, seen here with sister Paris Hilton.
Twitter descended on Tomi Lahren for her patriotic Halloween costume, saying she disrespected the flag with her look by violating the United States Flag Code.
Colton Haynes did blackface when he dressed as Kanye West in 2011. He apologized, adding it wasn't his intention to offend anyone.
Harry Hamlin apologized for wearing a swastika on his shirt as part of his Sid Vicious costume in 2015: "If I hurt you we were being authentic to the characters of Sid and Nancy for our Halloween costumes. It hurt and angered many of you and we are deeply sorry for that. That was never our intention. We did not mean to offend. With love, Lisa and Harry."
Kylie Jenner caught flack for labeling this costume "Eskimo" on social media, before changing the name to "snow princess" in 2015.
Chris Brown angered fans and critics when he went as a terrorist for Halloween in 2012. ""Ain't nobody F-cking wit my clique!!!!" he captioned the photo.
Scott Disick didn't win too many people over when he dressed as an "Arab Sheik" in 2014.
Heidi Klum was criticized for dressing as the Hindu goddess Kali, with Hindi leaders calling for an apology.
Ashley Tisdale was criticized for sexualizing Dia De Los Muertos with her look in 2016. She clapped back to haters saying, "My husband is half Mexican and wasn't offended."
Ashley Benson thought it was wise to ask, "What do you guys think of this cecil the lion costume?" after putting on this getup in 2015. Cecil was famously shot and killed by an American dentist that same year.
Tia Mowry didn't make many waves in this costume when she first wore it either, but has also popped up on quite a few "offensive Halloween costume" lists in the years since.