I couldn't wait to get my Covid booster, but I had a dread of exposing my right bra strap. I noticed that many women slipped down their tops and exposed their straps.
Being underdressed and sporting a really lacy bustier, I didn't have courage, so I slipped out of my bra. After vaccination, I slipped into the rest room and got re-harnessed.
I normally wear a bra 24/7 and it was a bit of a shock to go without one for a couple of hours. I'm only 38 C but it was lovely to be re-strapped!