So I remember reading a webtoon and she convinced her brother and father to wear like a new style of clothing and the main female lead she wore pants and a harness or corset chain for a ball or some sort of party and I feel she was a transmigrator who is high in nobility and I think she had black hair and that is all I can remember it was just that fashion statement that really struck me so please anyone tell me if they know the title of this webtoon!!!

Cassmire: The Loyal Sword

"The world is a dangerous place to live, not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein

Thank you this is exactly it!!! 😀