Let's get this straight.
- IVE performed during the day, headliners close the night.
- They had no stage setup, which is reserved for headliners.
- On the official Lollapalooza graphic, their names were in small font, headliners get the biggest.
- Their set was only ~40 minutes, far shorter than headlining acts.
- Major medias didn’t report them as headliners
see the difference?