So happy with these leggings! We used them for the chicken costume and they kept my baby warm all night. I would say they are true to size. My 17 lb baby fits in leggings for 6-12 months and has room to grow.
Pros
Don't sleep on them! They are so cute on my 1 year old (at 12-24 mos). Look adorable under a little jumpsuit with sandals.