Behind Adam Levine’s toothy grin lurks Hollywood’s newest diva!
The Voice coach aggravated onlookers with his bratty behavior during a recent appearance in New York City, sources said.
“He was acting up like a petulant kid in front of the crew and other judges,” a mole said of NBC’s Upfronts presentation on May 13.
The Maroon 5 rocker, 40, was such a nightmare that bosses used a stand-in during a second rehearsal to avoid the hassle, the snitch revealed.
“All in all, it was a complete disaster,” tattled the source. “There are few people looking forward to crossing paths with Adam again!”