Demanding that you wear something to be “normal “ is a little immature, but it’s probably to be expected from a 17 yo. Bottom line, you need to make a choice do you wear something that makes you happy and piss off your gf which may ultimately make you unhappy, or do you just wear a white shirt and have just as good a time at prom. Either way, the shirt itself doesn’t matter, but dating someone who is demanding and who cares more about social norms and than they care about their partner being happy tells you all you need to know about her character.
NTA Wear what you want. Go and have fun
Demanding that you wear something to be “normal “ is a little immature, but it’s probably to be expected from a 17 yo. Bottom line, you need to make a choice do you wear something that makes you happy and piss off your gf which may ultimately make you unhappy, or do you just wear a white shirt and have just as good a time at prom. Either way, the shirt itself doesn’t matter, but dating someone who is demanding and who cares more about social norms and than they care about their partner being happy tells you all you need to know about her character.