It turned out the cabin was not pressurized, and the bra was expanding.
"As the thing got bigger, I tried to stand up," Jenkins said, "and I couldn't see my feet."
The instructions said that the bra's pads could be inflated up to a size 48.
"I thought, 'What would happen if it goes beyond 48?'" Jenkins recalled.
Big trouble in South America, that's what. Link -via YesButNoButYes