WP#ACL/ZOJ/WENN 1 / 9
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Sincerest form of flattery? Not exactly. Julianne Hough's Halloween costume is stirring up quite the controversy, and rubbing people the wrong way. The "Safe Haven" actress showed up to a Halloween party in Beverly Hills, Calif., dressed in blackface on Friday.

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The 25-year-old was photographed dressed as the character Crazy Eyes (played by Uzo Aduba) from the new Netflix hit, "Orange Is the New Black."

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Hough went all out for her costume, wearing orange prison attire, her hair in a knotted 'do and even had an I.D. with the name "Crazy Eyes" on it. The former Dancing With the Stars professional dancer looked to be with a group of six female friends dressed up as several of the other fictional inmates as well.

Hearing of the backlash, Hough quickly took to Twitter to respond the following day. "I am a huge fan of the show Orange is the New black, actress Uzo Aduba, and the character she has created," she wrote on Saturday. "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's ex Ryan Seacrest also was in attendance at the party, but the two didn't seem to interact with each other, a source tells Us Weekly. The two split in March after dating for more than two years.

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The "Footloose" star's unfortunate choice of clothing comes as Hough is in mid-production of her latest film, "Curve." The Netflix series "OITNB" is currently filming its second season, and is set to return in 2014.

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