I downloaded the app. lolaburns - how are the sizes? Are you buying 2 to 3 years for L right now? E is 27ish lbs.
In the separates, L wears 18-24 mo. He's about 25 lbs. and I think 33-34" tall? I think that even next summer he can wear the 18-24 shorts and tops I bought.The 18-24 shorts and pants are too big in the waist for him and I have to use the drawstrings or fold them down one time. 2-3 years would be way too big on L.