The singer was visibly upset over technical difficulties during her set, when her microphone failed several times (and we thought she lip-synced).
"Sorry, the sound isn't working!" she told the crowd. "Are you guys having a good night? I promise, a lot cooler people are gonna come out tonight.
"Is it okay if I perform two more songs and you guys can get to it?"
But things still didn't go well with the sound and Selena was even heard dropping a...
The 27-year-old Houston, Texas, native smiled for cameras as she enjoyed her day.
Speaking of SI's annual swimwear extravaganza, editor M.J. Day has been posting several bikini shots of all the models for the forthcoming issue to her Instagram page. We assume Julie will be in the issue, but Day posted only teaser shots -- only bodies and no faces. So far we've picked out Kate Upton and Emily Ratajkowski (we think). S...