Help!! HIGHSCHOOL AND FATHER 😭💔

Okay I am starting high school and I do not know what to do! I have no new clothes because my dad only likes my sister! He only likes her because I hate wearing jeans (I went through a phase and now I just wear skirts) but he always loves off my sister! Whenever I ask him to get me at least a shit he says no?? I have good grades and I have never done anything wrong!

All he likes to say is ask my mom ask my mom (they are split) and she is a hardworking mother and I don't like taking money from her! He gets lots of money from his job all I ask for is 20$ for a shirt and he gives my sister $500 dollars for clothings! So now I have nothing to wear for the first day and imagine a whole year wearing the same clothes nothing new ever!

If you guys can give me any idea I wear a black skirt so plz tell me anything that can match with that! 😭😭