I look at this childs outfit (the one on the right, although the one on the left is a doozy) and I can’t help but feel this is somewhat influenced by Charleton Heston’s outfit in Soylent Green.
All that’s missing is the neckerchief!
Coming tomorrow on Plaidstallions.com: The Superheroes go waterskiing!
AKA Brian Heiler author of "Rack Toys: Cheap, Crazed Playthings" and co-editor of "Toy-Ventures Magazine". Co-Host of the "Pod Stallions" podcast. Host of the Brick Mantooth Youtube channel, painter, designer, writer, mental health advocate, toy collector, Mego, and Mego Knock-Off enthusiast. I have large feet, ADHD and I live in Canada. Talk toys, not others. 
@brickmantooth
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Knock-Off Book
The kid on the left reminds me vaguely of Barbra Streisand in What’s Up, Doc?