TOS Uniforms Were Made In a Sweatshop
Star Trek is known for being made on a tight budget. Some of the supports on the bridge were Jolly Ranchers glued onto plastic, and almost everything was papier-mache. Roddenberry once cast his own lawyer for a role!
Source: ctsnet.edu
NBC also didn’t want to pay professionals to make enough uniforms. Herb Solow and Robert Justman paid non-union sweatshop cash to make a minimum number of uniforms they needed and even snuck them on set through a back window.