Baby has been measuring several weeks big, so I went for a sizing U/S today. He is currently 8 pounds, and they are estimating mid- to high 9's for full term. DD was 10.5, so I would be happy with a slightly smaller baby!
I know there is room for error, but I was afraid they'd tell me 12 pounds or something! At least I know, even on the high end, he will probably be about DD's size max.