Possible Clues:

• By the sound of it, you'll have to pay to get it on top
• False top
• Socially acceptable in top quarters to sport one?
• Artificial hairpiece
• On top of everything else you'll have to pay for this, by the sound of it
• An American wig or hair-piece
• Store-bought hair
• Implants alternative
• Rug with a part
• A man's hairpiece in America