Related Clues:

• Uppercase letters
• Stuff to talk about
• Milliners' output
• Beavers, perhaps
• Headline features, briefly
• Occupiers of top spots
• Toothpaste-tube tops
• Mushroom heads
• Bowlers, for example
• Stoppers
• Different roles, so to speak
• Bowler and boater
• One-ups
• Berets and derbies
• Unsurpassable