Halloween offers celebrities a canvas for elaborate transformations, but this freedom has often led to controversy. Numerous stars have faced public backlash for costumes deemed offensive, ranging from portrayals of dead icons to instances of blackface and cultural appropriation.

Actress Chloë Sevigny drew criticism in 1999 for dressing as a deceased Princess Diana, two years after the royal's fatal car crash. Sevigny's costume featured a cut on her chin and makeup to mimic a paler complexion, with the words "Die Di" written on her blazer.

In 2006, comedian Bill Maher dressed as Steve Irwin shortly after the "Crocodile Hunter's" death in a stingray attack. Maher's costume included a fake stingray barb on his chest. He later defended the costume, suggesting that those killed by animals might have provoked them.

Julianne Hough faced significant backlash in 2013 for wearing blackface as a portrayal of Suzanne "Crazy Eyes" Warren from the Netflix series "Orange Is the New Black." Hough apologized, acknowledging that her costume had caused hurt and offense.

Model Julia Fox's 2025 choice of a blood-splattered Jackie Kennedy, replicating the outfit worn by the former First Lady in the immediate aftermath of John F. Kennedy's assassination, was described by Fox as a "statement" rather than a costume.

In 2003, Khloe Kardashian donned a pimp costume with several Black friends, including twins Malika and Khadijah Haqq, and sisters Meagan and La'Myia Good, who were adorned with chains. Meagan Good later reflected on the costume in 2019, calling it a result of being "young and dumb."

"Schitt's Creek" star Emily Hampshire apologized in 2023 after dressing as Amber Heard alongside a friend dressed as Johnny Depp, shortly after their highly publicized defamation trial. Hampshire deleted the post and stated that domestic abuse is "never, ever funny."

Scott Disick was accused of cultural appropriation in 2014 for dressing as an Arab sheik, accompanied by the caption "We getting Arab money tonight." The incident was later depicted on "Keeping Up With the Kardashians."

Adrianne Curry, winner of "America's Next Top Model," channeled Amy Winehouse in 2011, referencing the late singer's struggles with addiction by including a fake syringe. Winehouse died of alcohol intoxication less than two years later.

YouTube personality Tana Mongeau drew criticism in 2018 for a sexually suggestive costume of JoJo Siwa, who was 15 at the time. Mongeau later clarified that she intended no disrespect to Siwa, with whom she claimed to be friends.

In 2014, Gwen Stefani combined a costume of Sandy from the movie "Grease" with a reference to Hurricane Sandy, including a bloody head wound. This costume drew criticism for making light of a natural disaster.

Harry Hamlin and Lisa Rinna apologized in 2015 after Hamlin dressed as Sid Vicious, complete with a Nazi swastika shirt, a reference to Vicious's association with his girlfriend Nancy Spungen, who was found stabbed to death.

In 2021, Billie Eilish and then-boyfriend Jesse Rutherford playfully referenced the age gap in their relationship, with Eilish dressed as a baby and Rutherford as an older man. The couple faced criticism due to Eilish being 20 and Rutherford 31, with Rutherford having known her since she was 15.

Comedian Jeff Ross portrayed controversial college football coach Joe Paterno in 2012, accompanied by two men in only towels and football helmets. Paterno's career ended amid the Penn State child sex abuse scandal involving his assistant coach Jerry Sandusky.

Singer Chris Brown reportedly dressed as a member of the Taliban in 2012. His mother later defended the costume on X, stating, "HALLOWEEN IS FOR FUN NOTHING MORE THAN JUST FUN."

In 2018, O.J. Simpson, recently released from prison, dressed as a gynecologist named "Dr. Seymour Bush." Simpson was convicted in 2008 for armed robbery and sentenced to prison, years after his acquittal for the murders of Nicole Brown Simpson and Ron Goldman.

Snowboarding champion Shaun White was criticized by the Special Olympics in 2018 for dressing as Simple Jack, a character with intellectual disabilities from the film "Tropic Thunder." White apologized for his insensitivity.

Ashley Benson faced backlash in 2015 for a costume that appeared to be Cecil the Lion, who was killed by a trophy hunter. Benson later denied the resemblance and expressed regret for any hurt caused.

Heidi Klum, known for her elaborate Halloween costumes, faced controversy in 2008 for dressing as the Hindu goddess Kali, a deity associated with death and time.

Other notable instances include Justin Trudeau in brownface, Kate Hudson and friends as followers of Bhagwan Shree Rajneesh, Colton Haynes in blackface and brownface, Luann de Lesseps in blackface, Jason Aldean in blackface, Joni Mitchell in blackface, Hilary Duff and Jason Walsh as a pilgrim and Native American, Nicky Hilton as a Native American, Chrissy Teigen and John Legend as a cowboy and Native American, and Tia Mowry as a geisha.