I have Identicals and yep, have mixed them, up as bubs, I left one with an ankle tag, and one with a wrist til I got familiar, but still had a few mix ups ( fed the same one twice!!!) I havent mixed em up once they got a bit older, and NO way I could do it now, they sound dif, act dif, and are themselves KWIM??? I still have trouble with baby photos knowing who is who ( sometimes I make it up LOL) In grade 1 they had their hair cut dif, as were sick of being known as the twins, and wanted people to remember their names, one has shoulder lenght hair, the other long hair, but people still say, "now wich one has the short hair ??":mad: