Madonna has gone "Gangnam Style."
Korean pop star PSY joined the pop icon a last night during her second show this week at Madison Square Garden.
They danced to his pop culture anthem "Gangnam Style" and to her jam "Music" in front of nearly 20,000 fans.
Madonna said PSY flew "all the way from Frankfurt, Germany.
She also said she was a big fan of the rapper and loved his suit, which was bright red.
PSY added that he's had a lot of experiences in the last few months, and that performing at MSG with Madonna topped his list.