Free crochet diaper cover pattern and I added the ruffles by doing 3 rows of surface crochet then in each stitch 4 double crochets: http://www.oodles-4-noodles.com/2011/03/long-tailed-baby-elf-hat-tutorial.html
Ravelry: Unicorn Hat and Diaper Cover Newborn - 12 Months pattern by Briana K Crochet. - My baby can be a unicorn, too. ;)
Free Crochet Pattern - Little Bunny Diaper Cover by Croby Patterns
Repeat Crafter Me: Crochet Bunny Hat Pattern. Free pattern for this hat and diaper cover in newborn to adult sizes (for the hat... you'll have to figure out adult sized diaper covers yo own damned self!).
Unicorn Hat and Diaper Cover Newborn.
Crochet - Patterns for Children & Babies - Wearables Patterns - Crocodile Stitch Diaper Cover