Miss USA 2012 and Nick Jonas's ex-girlfriend Olivia Culpo got a big break today by joining the red carpet team for E!, but the 100-degree heat proved that the Sun remains the hottest star in Hollywood. Valiantly holding it together as the camera was on her, Culpo went down in a flash once it cut back to Guiliana Rancic. Co-hosts Ross Mathews and Brad Goreski instantly reacted, making mimed fan motions to the audience to indicate that it was very hot outside. Thanks, guys.

Sources: Daily Mail