Re: When do size Regular pf's fit?
My LO just outgrew the infant size at 5 months and 13lbs. The length is still perfect for him, but the waist is literally, *just* too small. We also have some regular size prefolds that he's been able to wear for awhile now. All you have to do is fold down the back to the length you need and then use/fold like normal. They may be a bit bulkier than normal but they'll work fine!
If anything, you can always use them as burp clothes until they fit. But don't get rid of them!
Alycia + Tom = 2 Labor Day babies! Tommy (9/09) + Vinny (9/12)
Under construction: unexpectedly expecting in 2015!