As Lollapalooza’s original fans grow up, attending with their offspring feels, well, perfectly fine

“Is this interview about siblings or dating or something?” The question, shouted at them by a group of passing festivalgoers, made 16-year-old Hunter Smith blush. His mother, Ellen Smith, couldn’t stop laughing. The pair had traveled from Boise for their first Lollapalooza to see Swedish pop star Zara Larsson, Charli xcx, and other acts — a weekend of enjoying live music, scoring free merch, learning to navigate festival crowds and the occasional embarrassing mother-son moment. …