My(23M) girlfriend (23F) is a number 1 hypocrite do you think am wrong?

So we went to a beach yesterday and she told me she will wear 👙 this I was like fine no problem I will also wear this 🩲 only. She started arguing with me no it's too revealing you cannot wear only 🩲. I told her what's the deal it's same as your outfit. She cancelled wearing 👙. Why is she so insecure why does she want to dictate what I can wear and she didn't let me wear 🩲 btw.