I think you'll figure it out pretty quick, and most usually you buy bigger anyway. And fit varries depending on the baby too. But here's what I can tell you from experience:
Runs Small: Baby Lulu Zutano Catamini Olily - but I've had some varying experiences and some even run big
In general most of the european sizes seem to sun small.
TTS, But I still size up one size Old Navy, most things fit pretty well Gap Polo RL
Yep, I started noticing the same thing...(course, I haven't been able to try anything on An Na Grace yet), but just holding up the "same" size in various brands is hilarious...totally different.
