Related Clues:

• Humdingers
• Four on a four, e.g.
• Doozies
• Lulus
• Fivesome on a five
• Show of hands?
• 1960's-70's backup group, with 'the'
• Five spots on a five-spot
• Knight's support
• Knight's backup
• Gladys Knight's backup
• Domino dots
• Gladys Knight's backers
• They were behind Gladys Knight
• Knight's group (with ''The'')