One Direction + 5 Seconds of Summer

What can you expect at this show from Simon Cowell–groomed U.K. boy band One Direction? Deafening screaming, barstool serenades, a million bucks’ worth of camera-phoneage and, of course, the smell of cheap body spray, wafting on stifling clouds of estrogen. Not to mention "What Makes You Beautiful" and other maddeningly catchy boy-band anthems. Plus, you'll no doubt get an earful of latest smash Midnight Memories. Aussie pop-rock heartthrobs 5 Seconds of Summer open.