Millie Williams has seen 42 bands.

Band Concerts Seen
  Harry Styles 5 concerts
  Inhaler 5 concerts
  5 Seconds of Summer 4 concerts
  Mitski 2 concerts
  Ruel 2 concerts
  Shawn Mendes 2 concerts
  Wet Leg 2 concerts
  Annie Mac 1 concert
  Annika Bennett 1 concert
  Blondes 1 concert
  Blossoms 1 concert
  Chic 1 concert
  COIN 1 concert
  Conan Gray 1 concert
  Dua Lipa 1 concert
  FEET 1 concert
  Gracie Abrams 1 concert
  Griff 1 concert
  Halsey 1 concert
  Jonas Brothers 1 concert
  Joshua Bassett 1 concert
  Julia Michaels 1 concert
  Justin Bieber 1 concert
  Lorde 1 concert
  Mallrat 1 concert