I am writing to express my sincerest apologies for the unacceptable clothing I wore to your [event/occasion]. It was never my intention to offend or disrespect you or anyone else in attendance, and I regret my poor judgment in this matter.
I understand that my clothing was inappropriate for the occasion and I take full responsibility for my actions. I can only imagine how embarrassed and disappointed you must have been, and I am truly sorry for any discomfort I may have caused.
I am deeply ashamed of my behavior and I can assure you that it will never happen again. I have already taken steps to ensure that I will not make the same mistake in the future. I have taken the time to reflect on my actions and I am committed to making better choices in the future.
I understand that my actions have caused you pain and I am truly sorry. I hope that you can find it in your heart to forgive me. I value our relationship and I am committed to rebuilding your trust in me.
Once again, I apologize for my inappropriate clothing and I hope that you can accept my sincere apology.