During the iHeartRadio Music Festival in Las Vegas this weekend, Miley Cyrus was apart of the line-up that hit the stage to perform at the MGM Grand. However, Ms. Twerks-a-lot was not her usual self. After just breaking up with her fiancé Liam Hemsworth, the 20-year-old performed her new single “Wrecking Ball,” which is rumored to be about her ex-hubby of four years. While Miley was performing her heart-felt song, she began balling her eyes out. Peep the footage below and try not to cry!