A Hollywood actor turned up at a LE SSERAFIM world tour show and a global pop star has been quoting their lyrics. On Oct. 2 (local time), LE SSERAFIM held ‘2026 LE SSERAFIM TOUR ‘PUREFLOW’ IN UNITED STATES’ at the United Center in Chicago. Hollywood actor Chase Infiniti made a surprise appearance at the concert. A rising star who leads the film ‘One Battle After Another’ alongside Leonardo DiCaprio, he is also known to K-pop fans for appearing in ATEEZ’s ‘BAD’ music video. When LE SSERAFIM introduced the special guest, cheers erupted from the crowd; Chase Infiniti sent finger hearts to the members and then danced on the spot to ‘CRAZY’. Exchanges with global stars also took place at the ‘2026 iHeartRadio Music Festival’ in Las Vegas in September. LE SSERAFIM, the first K-pop girl group to perform at the event, took the stage right after Benson Boone, and the two acts posed for photos together backstage. Benson Boone is the singer-songwriter who won Song of the Year at the 2025 iHeartRadio Music Awards for ‘Beautiful Things’. The day before their festival set, LE SSERAFIM visited the venue to watch Swedish pop star Zara Larsson perform. Larsson later posted a photo with the group on Instagram, using ‘CRAZY’ as the background music and quoting its lyrics with the caption “All the girls are girling.”