No. 1: Cee Lo Green the Peacock
This is probably Cee Lo Green's most outrageous outfit to date.
During the 2011 Grammy Awards, the pop crooner dressed like a colorful peacock and performed 'F--- You' with 'Glee' actress Gwyneth Paltrow and the Muppets as his backing band.
You would think Lady Gaga would wear something like this, so props to Green for picking this unique costume. It was certainly one of the most memorable performances at the Grammy Awards that year.