Leighton MeesterLeighton Meester discovered a lot about herself while making her new film, 'Country Strong,' including that, much to her surprise, she's depressed.

In the movie, Meester plays Chiles Stanton, a country ingénue who goes on her own musical journey as she begins to write songs from her heart. "Because of this movie, I started doing that for myself and writing music that speaks to me and is from my heart," she says with a laugh, "and apparently, I'm really depressed."

The 'Gossip Girl' star is no stranger to the recording studio. She has released two singles and also provided guest vocals on Cobra Starship's hit, 'Good Girls Go Bad.' But those pop tunes didn't prepare her for 'Country Strong.'