Helpp me out girls plzzz!!!?

ok soo ppl keep telling me ohh if u sleep with a bra/push up bra ur boobs will stop growing nd u will get cancer is that true cuz i feel better sleeping in a braa if anyone knows the answerr i really appreciate it cuz now im scared.. and btw im a a34 and only 13 will my boobs continue too grow??? nd ppl say ur boobs grow at night and u shouldn't wear one and others say u can if u feel comfortable it doesn't matter im soo confuse plz help me out thanks and iff my mom hass bigg boobs will i?? cuz she does and i want bigger boobs :( ugh and if there anything else like advice on to how to get bigger booobs or anything like vitamins or something and btw no boys plz cuz u dnt have boobiiess!! lmao anyways thanks