Muppet Babies Halloween costumes (Ben Cooper)
From Muppet Wiki
In 1984 Ben Cooper, a popular manufacturer of children's Halloween costumes who had made a number of Sesame Street costumes, produced a line of Muppet Babies costumes, including Baby Kermit and Baby Piggy.
The Kermit costume consisted of a mask, a sleeveless top, and a pair of pull-on pants. The outfit was Baby Kermit's usual blue and white sailor suit; Baby Kermit himself appeared on the shirt over his name.
