Many soccer jersey fanatics know about Cameroon's infamous, and banned, sleeveless kit from 2002. However, many don't know that just two years later Cameroon entered the field during the 2004 African Cup of Nations with a one-piece uniform. That's right, the indomitable lions played an official match where their jersey and shorts were part of a "onesie".
Much like their first experiment with Puma, FIFA did not approve. Joseph Blatter, FIFA President at the time, simply stated that it was against the rules and such a design was never used again.