RE: What's the difference between 24 M and 2T?
Like the other have said it tends to be diaper room. But honestly, it totally depends on the brand! Sarah can still wear 18-24 month leggings from Gymboree (even over a cloth diaper!). But mostly she wears 2T pants and 3 or 3T shirts.
Generally, things without the T are slimmer than things with the T. (A 3 is slimmer than a 3T). And once you hit 2 or 2T sizes, then the clothes usually only tend to get longer in the leg length and not much larger anywhere else. I started buying lots of 3/3T and even 4/4T shirts last year since the overall size difference is very small. Pants are another story!
HTH,
Beth, mom to older DD (8/01) and younger DD (10/06) and always missing Leah (4/22 - 5/1/05)