Related Clues:

• Social event
• See 18-Across
• Cut a rug
• Samba or mambo
• Get down
• Annie, for one
• What flames may do
• Carrot-top
• Lucille Ball, for one
• Choreographer's creation
• Carrot top
• Juilliard major
• Ball, notably
• Trip the light fantastic
• Hint to the start of 17-, 31-, 46- and 61-Across