In honour of the occasion, I decided to make them each a dress. Of course, they weren't ready on time, but I did finish one today, and the other is half done. I used Kwik Sew 3542 View B.
Both dresses will be in the same fabric, just different colours. One is pink, the other is turquoise (aqua?).
Here's the pink one:

I hope they fit...I'll post pictures of them wearing them in the near future.