Pepita by Martina Behm - FREE pattern on Ravelry.com. TOTALLY making this for E - in Merino for wearing over cloth diapers. ;)

"Ravelry: Pepita pattern by Martina Behm *pattern", "Free Pattern: Pepita by Martina Behm but do it in a solid colour", "Knitted onesies for wee little ones.", "New, revised Version Oct", "all in oneszie"