The 29-year-old One Tree Hill actress served as host while Gavin, 35, and Vanessa Carlton hit the stage to perform live sets at the free concert.
“Off to Webster Hall to kick off @Origins #OriginsRocks!,” Sophia wrote on her Twitter account before the event. “I’m excited to celebrate earth month w/ all of you green-minded peeps! @gavindegraw.”
10+ pictures inside of Sophia Bush at the Origins Rocks Earth Month Concert… More Here! »