My mom won't let me shave my legs!?

Ok so I have REALLY hairy legs and the hair is really dark since I'm Italian. I hit puberty when I was probably 9 1/2 and I started getting really bad underarm hair at like 10. At first I didn't care cuz I was little and didn't understand. Then my mom forced me to wax my underarms. Wed only do it like 3 times a year so most of the time Id go with a long sleeve. Then she'd Wax my legs but only like 5x a year since 1. She barely had time and 2. When she did have time I wouldn't let her because it hurts so bad!! I hate it so much! And my mom only does waxing because she says it doesn't grow back that fast and it makes the hair grow back lighter. That's true but I can't always wait! I have clean legs for about a week then like 2 months of disastrous black legs and underarms. Now I just finished 8th grade and still never shaved! I started being embarassed about it in the beginning of the year when all the girls had smooth legs and I was all hairy. I'd seriously wear sweats to cover my legs. Actually when I was about 11 I asked my mom if I could shave because all the girls had smooth legs and she said no, most girls are hairless that's why. So I continued barely waxing. But now I'm on vacation the whole summer and staying near the beach and it's really embarrassing! I'm 13 now and everytime I ask her she says absolutely no because the hair grows back thicker and darker and it'll be harder to wax -_- WTF idc! U just keep shaving! But yeah, so now it's summer and I'm going with long sleeves and jeans cuz she won't let me shave. How do I convince her to let me shave so I always have clean legs and underarms? Thanks a lot!!!