Britney Spears Attends A Back-To-School Event Benefiting The Nevada Childhood Cancer Foundation at the Zappos Campus in Downtown Las Vegas [Getty Images]

LAS VEGAS, NV - AUGUST 20: Britney Spears (R) attends a Back-To-School event benefiting The Nevada Childhood Cancer Foundation at the Zappos Campus in Downtown Las Vegas on August 20, 2015 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)

WireImage Denise Truscello