Are bouncers really strict on using other peoples ids?

I am 19 and my 22 year old cousin offered to give me her real id since we do look fairly alike....if I dont look exactly like the girl in the i.d. but fairly similar will the bouncers let me in anways even if they dont fully believe its me? Not trying to sound conceited but I do get called hot a lot so if you are attractive looking and have a big bust does it help?