My sister and I are not identical twins, since opposite sex twins can't be identical, but we have very strong genes and look enough like each other in face and build that if we wear the same outfit anyone who doesn't know us well can't tell us apart.

We both like it that way, so we keep our looks as close as possible and only use clothing to differentiate. One time we swapped clothes and pretended to be each other for a week, and even mom couldn't tell until halfway through.

I guess we're kind of lucky I didn't develop overly masculine features and her breasts and waist/hip didn't go all out like moms did. Her ass just kinda happened naturally but I had to work for mine.

And for the record cause everyone wants to know, yes we've had sex with some of the same people, sometimes at the same time. And yes, we've had sex with each other. Though as far as who's sticking what where, I'm usually the one getting things put inside me.