I've been thinking a lot about this. I think the temps here will be coldish for a month or so after this baby is born, so I'll need a mix of spring and summer clothes in 0-3 mos. size. I figure I'm safe with all summer 3-6 month size, and then fall/winter 6-9 month size and even 12 month size. My babies come out around ten pounds or so and have slowed growth around 6-9 months, so I think my assumptions are safe. I had a December and June boy, so am covered for boy clothes, but this one is supposed to be a girl. Of course my girl was born in January, so I need a few things for this babe.
I just ordered some things from The Children's Place online for both of my girls. (Even next years Christmas dresses!) They have a lot of stuff on sale for 50% off or more and a coupon code for 15% on top of that! I also use ebates for 3% cash back. I love good deals on kids clothes!
The only US I had was at 16 weeks, so I hope this really is a girl. My anatomy scan where I hope to confirm the gender is this week. (At 24 weeks.) Fingers crossed that this really is a girl!