The Netflix original show "Orange Is The New Black" is one of my very favorite shows and Crazy Eyes just happens to be my favorite character on the show, so I can understand why Julianne Hough would want to dress up as her for Halloween.
Using Blackface as part of your costume and going out in public, however, is a good way to get the world pissed off at you (at least if you're famous). The whole entertainment world has, as expected, freaked out.
Other than the blackface, cute costume idea.
The photo is a paparazzi shot and I don't want to pay for it or get sued so you can see Julianne's costume here or at the various links below.
UPDATE: Julianne has apologized saying on Twitter: I am a huge fan of the show Orange is the New black, actress Uzo Aduba, and the character she has created. 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.