Skin and show: Music stars rock festivals across the world

MVA red carpet hosts Liz Trinnear, Tyrone Edwards and Phoebe Dykstra arrive at the 2014 MuchMusic Video Awards at MuchMusic HQ on June 15, 2014 in Toronto, Canada. (Getty Images)

Ariana Grande performs at the 2014 Much Music Video Awards in Toronto. Grande will sing the national anthem at CenturyLink Field in Seattle on Sept. 4, 2014, before the Seattle Seahawks play the Green Bay Packers in an NFL football game, as the NFL kicks off its 95th season. (AP)

Lauren Toyota and Phoebe Dykstra arrive at the 2014 MuchMusic Video Awards at MuchMusic HQ on June 15, 2014 in Toronto, Canada. (Getty Images)

Jena Malone arrives at the 2014 MuchMusic Video Awards at MuchMusic HQ on June 15, 2014 in Toronto, Canada. (Getty Images)

Alyssa Reid arrives at the 2014 MuchMusic Video Awards at MuchMusic HQ on June 15, 2014 in Toronto, Canada. (Getty Images)

Nikki Yanofsky arrives at the 2014 MuchMusic Video Awards at MuchMusic HQ on June 15, 2014 in Toronto, Canada. (Getty Images)

Alyssa Reid and Virginia To Vegas arrive at the 2014 MuchMusic Video Awards at MuchMusic HQ on June 15, 2014 in Toronto, Canada. (Getty Images)

Kendall and Kylie Jenner arrive at the 2014 MuchMusic Video Awards at MuchMusic HQ on June 15, 2014 in Toronto, Canada. (Getty Images)




InnerSPACE host Morgan Hoffman arrives at the 2014 MuchMusic Video Awards at MuchMusic HQ on June 15, 2014 in Toronto, Canada. (Getty Images)

Jason Derulo performs on the Sands Steel Stage during Musikfest in Bethlehem, Pa., on Sunday, Aug. 3, 2014.  (AP)

Ellie Goulding performs on stage at Wireless Festival at Finsbury Park on July 6, 2014 in London, United Kingdom. (Getty Images)

Louisa Rose Allen of Foxes performs on stage at Wireless Festival at Finsbury Park on July 4, 2014 in London, United Kingdom. (Getty Images)

Louisa Rose Allen of Foxes performs on stage at Wireless Festival at Finsbury Park on July 4, 2014 in London, United Kingdom. (Getty Images)

Rita Ora performs on day 2 of the Yahoo! Wireless Festival at Queen Elizabeth Olympic Park on July 13, 2013 in London, England. (Getty Images)

Ke$ha performs on day 1 of the Yahoo! Wireless Festival at Queen Elizabeth Olympic Park on July 12, 2013 in London, England. (Getty Images)

Rihanna performs on stage on day 3 of the Barclaycard Wireless Festival at Hyde Park on July 8,2012 in London,United Kingdom. (Getty Images)




Jessie J performs at Barclaycard Wireless Festival at Hyde Park on July 8, 2012 in London, England. (Getty Images)

Rita Ora attends at Barclaycard Wireless Festival at Hyde Park on July 7, 2012 in London, England. (Getty Images)



Salt 'n' Pepa perform on stage at Wireless Festival at Finsbury Park on July 6, 2014 in London, United Kingdom. (Getty Images)