I need help finding a manga

I forgot the name but what I can remember is there was a girl who was considered ugly and got bullied so she started taking pictures of herself and editing them to make her pretty and one day a girl who had surgery to look like the bullied girls "pretty self" came up to the girl and made a deal that she would pretend to be her in real life and (I think this part is correct but my memory is a little hazy) the ugly girl would either get all of the money or get a large share of it. I think the ugly girl has a huge birthmark covering a lot of her face or she got into a accident.
Also it was most likely a Chinese manhua(?) Or a Korean manhwa(?)