Photos/Video: NICK JONAS, CHRIS BROWN, KELLY CLARKSON, NICKI MINAJ, SHAGGY, ECHOSMITH AND DAVID GUETTA HEAT UP LAS VEGAS AT THE IHEARTRADIO SUMMER POOL PARTY AT CAESARS PALACE

NICK JONAS, CHRIS BROWN, KELLY CLARKSON, NICKI MINAJ, SHAGGY, ECHOSMITH AND DAVID GUETTA HEAT UP LAS VEGAS AT THE IHEARTRADIO SUMMER POOL PARTY AT CAESARS PALACE  The CW Network to Air iHeartRadio Summer Pool Party as a Televised Special on Thursday, June 11   The iHeartRadio Summer Pool Party hosted