KS xs would be huge on a preemie. It's for 8lb, 21" newborns (according to pattern sheet).
I've used the New conceptions baby essentials preemie pattern before, and I think that would be a little big even on a 5lber. Her's a pic of Alannah in a slightly modified NCBE outfit. She was 6lb, 4oz, and 19" long. Head was 13". I just made the pants w/o the cuff to be bloomers, and made the top longer and a-lined it a bit to be more like a dress.
If you have Ottobre, there's a few issues that have size 50 clothes in them. I think those would be your best bet, though I haven't made any yet! I think Alannah would have a little room to grow in the 56, and the 50's would be too small.
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Allison mama to:
DH (lol), Chrissy 15, Mikhail 12, Kiera 10, Kivett 8, Aislinn 6, Alannah 3, and fresh from the oven Kian Oliver-Bell 11/15/07

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