Captain America: Advanced Technology

Wireless, wearable communicators were not invented until the year 2000, meaning they are quite modern. The first Captain America film is set in the 1940s, during WWII, and you can already see the major wardrobe malfunction here.

This is the second spot that this film took as well, and with good reason. After all, it just doesn’t make sense to have this kind of telecommunication in that time period. However, with Endgame’s time manipulations, it could as well be possible, and so far, this is the only wardrobe malfunction on the list that could have a reasonable explanation.