twins

You may remember the conjoined twins, Brittany and Abbey Hensel from news reports and even reality TV.

Ranker has a list of some famous folks who started out in life with a twin, but one of them passed away.

For the most part, twins not only look alike, but they have a lot of other things in common that we don't have.

This video is proof (if you really needed proof) that keeping track of twins is REALLY difficult.  Watch this poor mom try to put the little tricksters to bed!