Most Helpful Girl
"Mom, I am not getting a piercing to be sexy or hot. I really honestly think it looks cute! I think it would compliment my nose and make me feel more confident. I can pay for it on my own. I just want to look good for myself, and to look cute."
Parents don't like when children oversexualize themselves. Tell her you think it would look cute rather than sexy. Tell her you can pay for it yourself, and this teaches you the value of work and money, with will appeal to your mom. And most importantly, tell her you're doing it for yourself, and not to gain attention from others. Because you want it because you think it looks cute.