Are they Identical?

If so make a decision now to dress one in white socks and the other in colored socks. Otherwise you won't be able to tell them apart in pictures. You think you will know how to tell them apart and currently, you do know how, but you won't be able to in future looking back. You will have a picture of just one of them by themself or relatives holding one of them and without the sock tell you won't be able to distinguish. As they get older it becomes easier to distinguish but when little tykes it is a coin toss.

Trust me on this