On last night’s episode of “So You Think You Can Dance” (Season 8), Lady Gaga guest judged. Gaga wore a long blue wig, psychedelic attire and a gigantic, red military hat.

The Top 8 performed a number with an All-Star, and then paired off for four more numbers.

The night began with a quickstep from Sasha and Pasha, Caitlynn and All-Star Ivan performed a hip-hop number, Jordan and Ade performed a jazz number choreographed by Tyce Diorio, Melanie and Neill danced a contemporary routine to Mandy Moore, Ricky and Anya danced a lively and fun jive, Jess was teamed up with All-Star Lauren for a hip-hop number from Nappytabs, Tadd and Lauren F. put on a jazz routine in which they were burglars pulling off a heist, Marko and Allison then performed an emotional contemporary number, followed by tears by Gaga and a fewmore dance performances.

After the emotional dance performance by Marko and Allison, the judges were all standing and tears were flowing, especially from the pop megastar, Lady Gaga.