Miley Cyrus broke down crying in Vegas yesterday … while she performed a song rumored to be about her break up with Liam Hemsworth.
Miley twerked it up on stage at the iHeartRadio Music Festival — but the tears started flowing hard once she began singing “Wrecking Ball.”
As we previously reported — the couple has called it quits … and Liam has gotten tight with telenovela actress Eiza Gonzales — who BTW is crazy hot.
Despite the cry-fest … Miley cleaned up for her second performance of the night.
And wore this.