Clumsy move, Julianne Hough.

The former “Dancing with the Stars” performer donned blackface for a Halloween costume at a party in Beverly Hills on Friday.

The 25-year-old actress wore the make-up while dressed as the character Crazy Eyes from the Netflix series “Orange is the New Black.” She later apologized on Twitter.

“I am a huge fan of the show Orange is the New black, actress Uzo Aduba, and the character she has created,” Hough tweeted.

“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.”

Hough wore the make-up on her face and neck along with the  character’s signature knots and an orange jumpsuit. She and friends dressed as characters from the show.