Possible Clues:

• Ribbon worn by Girl Orchestra?
• Group following Celia waving ribbon
• A group of insects one's found in hair
• Insects in a group in overhead arch
• Fillet a team found full of insects
• Amazingly, I balanced this on girl's head
• Girl loudly forbidden fashion accessory
• It's worn to hold back the hair
• An infesting group that may be found in the hair
• Hair decoration forbidden, say, following a nasty infestation