Related Clues:

• Flash mobs, once
• The foreign investigation is in Vogue
• Most recent battles upset missing leader
• Gossip tidbit, with "the"
• Fresh gossip, with 'the'
• Beatle ending
• Pet Rock or Hula Hoop
• Ice Bucket Challenge, in 2014
• Suffix with Bieber
• Most fashionable office is in Paris
• Phone-booth stuffing, e.g
• Fidget spinners, for one
• Obsession, as with a pop star
• Like Hawaii as state, or Louisiana, on trial
• Not quite what's next