Possible Clues:

• Suggest leaving end of webbing out of panel strengthening garment
• A piece of material sown into a garment by most of the group in Air Force?
• A piece of material sown into a garment for guest's dance
• Good American group making strengthener for garment
• A piece of material sown into a garment for guest's dress
• Strengthening insert
• Garment enlarger
• Sleeve insert
• Cloth insert
• Jazz guests produce insert with extra material