Julianne Hough apologized on Twitter for dressing in blackface for a Beverly Hills, Calif., Halloween party.
To complete the costume, she wore an orange prison jumpsuit, an identification badge and had her hair in knots, People reported.
"I am a huge fan of the show Orange is the New black, actress Uzo Aduba, and the character she has created," she said.
"It certainly was never my intention to be disrespectful or demeaning to anyone in any way. I realize my costume hurt and offended people and I truly apologize."