They are a little longer from waist to crotch and a little longer in the inseam. If you pick up a 2T and a 3T of the same brand and style and lay them down side by side the difference is usually not a whole lot, but it is there.
at 4:30 PM on May. 27, 2010
I would expect the waist to be differet as well. Currently though my DD is between 18 months clothes and 2Ts. I dont buy 18 month stuff anymore, but she can still wear a lot of the summer clothes she got last year! She is almost 23 months.