Turns out William is just as much as a party prince as his brother Harry. He was even said to be acting up more than his little bro while toasting the newly weds Stateside.
"The whole thing was unreal man," Jimmy Church, singer with the Jimmy Church Band which played for five hours at the reception at Memphis Hunt and Polo Club, told the Telegraph.
"He was actually a little more conservative than William," adding, "I thought the whole thing would be a bit conservative because they're royal but it was crazy. We did five encores. Harry came up and asked for another song, then William came up and asked for Soul Man. They both thanked me, they were great."
According to reports, Kate wasn't "jumping for joy that William was having so much fun away from her". We guess K-Middy suffers from FOMT just like the rest of us.
LOVE KATE & WILLS? See more from the couple on their recent Royal Tour of New Zealand and Australia in the gallery below.
MORE! Prince William is on a mission to be cool by DJing and spray painting...