Help plz 😪

Emily

So my boyfriend and his family invited me to go to the beach with them this summer! I’m allowed to go but my parents are sooo strict in what u wear! I’m 16 (17 when I go to the beach) and I can’t wear a bikini and I want to! I have to wear a tankini. My mom was allowed to wear them at my age but she keep saying it a different world now. I’ve literally tried everything to get them to let me where them but they keeps saying no. Can someone help!