My daughter currently wears a size 4T, but is in my sister's wedding in August so I ordered up a size (she grows very fast). Tried it on and it's a bit large(as expected, since it's a size larger than what she's currently wearing). It's super cute and flowy. The rosette is detachable via safety pin. I received a headband from the seller (for attaching the rosette if you choose?). My daughter didn't want to take off the dress! Love it!