My daughter is quite the little princess and I think that it is about time to make her a new dress-up, so I have been on the look out, and this is what I have found. These would be perfect for the dress-up box or a halloween costume.
10 Unique Free Homemade Kid and Baby Halloween Costume Patterns
PBS provides costume patterns in both sewing and no-sew options for Buddy the Dinosaur. Also great if you want a dino slipper pattern! I haven't been able to find any "dino feet" slippers for my son who is out of the toddler sizes.