Thanks guys. A lot of people say that we look really similar and I think sometimes it's more in certain pictures than in person. But we sound almost identical, especially if we have been around each other a lot. We've confused our own mother, spouses, and I think even my sister's dog by sounding so similar.
I don't really look much at all like any of my siblings. We actually all look really different! But like you, my sisters and I sound exactly alike, and our mom too, so the four of us never know which one we're talking to and confuse other people all the time on the phone.