DANCING WITH THE STARS - "Episode 1804" - For the first time ever celebrities switched professional dance partners on "Dancing with the Stars," MONDAY, APRIL 7 (8:00-10:01 p.m., ET) on the Walt Disney Television via Getty Images Television Network. This past week, America was given the power to vote and change celebrity and professional dance pairings and each star faced this new challenge. The new couples were revealed live for the first time throughout the evening. Additionally, two-time professional "Dancing with the Stars" champion, Julianne Hough, returned to guest judge for the second time alongside Len Goodman, Bruno Tonioli and Carrie Ann Inaba. (Photo by Adam Taylor/Walt Disney Television via Getty Images)