Related Clues:

• Inaugural ball holder
• Supreme
• Better than better
• Superlatively good
• King of the hill
• Letter sign-off
• Second-to-none
• Like a 63 Across?
• Most helpful
• Informal letter signoff
• At the top of the heap
• "__ in Show"
• Blue ribbon-worthy
• Head honcho at a kennel?
• "Father Knows ___"