Pillowcase nightgowns - simple and easy tutorial that uses stretch lace to simplify the pattern. In my experience, stretch lace doesn't hold up too well or long under much washing and wearing... Maybe use regular lace and just put a little button/loop opening in the back instead.
icandy handmade: (tutorial) pillowcase nightgowns take 2
Luli & Me Dress (Infant) | Nordstrom
Heirloom Tucks and Lace Dress for Your Special by CLDaugherty
Lily Bird Studio PDF sewing pattern Amy's peplum top / blouse - 12 mths to 10 yrs - overskirt, mandarin style collar, ruffle sleeves, $8.50