Leighton Meester has mastered the role of an Upper East Side elite in 'Gossip Girl,' played leading lady in pop-rock group Cobra Starship's 'Good Girls Go Bad' music video, and now she's proving her country chops as beauty queen-turned-singer Chiles Stanton in 'Country Strong.'

In a new 'Country Strong' video trailer that's surfaced, Meester performs a fun tune called 'Summer Girl.' Meester prances around in a pretty dress and sings about having a good time with her girlfriends, but the footage is heavy on her on-screen time with love interest Beau Hutton, played by Garrett Hedlund.

While Meester and her co-stars -- Hedlund, Gwyneth Paltrow and Tim McGraw -- were preparing for their 'Country Strong' roles, they were, of course, deeply immersed in the Nashville scene.

"Just being in Nashville and working there and meeting the most incredible musicians and producers and songwriters and singers, just being in that world was really cool," Meester tells MTV. "I have this newfound appreciation for that style of music."

Based on what we've seen of Meester's role so far, we believe it. What do you think of her playful 'Summer Girl' performance?