Have you ever bought your LO's clothes 9-12 months in advance? I was doing a little online clothes shopping for my girls for spring/summer and I noticed a lot of really cute fall/winter weather items. I decided to go for it and buy some things in 4T for A for the next winter season. I feel like once they get older it's easier to guess since they stay in sizes much longer. I didn't attempt to go beyond summer items for E. I hope it works out!