My sister and I had numerous clothes the same and we hated it! I swore NEVER to do that to my kids.
I have 3 girls and I have my head hung in shame that I have done it to them twice. Numerous times I have dressed them in different things but similar colouring!
I think it looks sooooooooooo cute, but I do have flash backs so will not do it more than a couple of times. As it is, my time is running out as DD1 is about to change sizes.