You can take the photo to the post office and ask one of the staff in there. In Immi's she got too excited and started clapping her hands, i took to the post office and about 3members of staff looked at it for ages then decided it was ok as her eyes and most of her face was shown, just her chin was covered by her hands. So in that sense as long as the hairband isn't covering her eyes/face should be ok but its always safer to get it all checked by post office anyway.