St. Vincent Writes the Score for Girlfriend Kristen Stewart's New Short Film

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St. Vincent and Kristen Stewart have taken their relationship to another level -- a professional level.

The 34-year-old singer revealed on Twitter that she wrote the music for Stewart's upcoming short film, Come Swim, which will be the actress' directorial debut. "I composed the soundtrack for Kristen Stewart's new short film Come Swim, which is also premiering at Sundance!" St. Vincent, whose real name is Annie Clark, tweeted on Wednesday.

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The short is described as "a diptych of one man's day, half impressionist and half realist portraits."

St. Vincent is also making her directorial debut with the all-female horror anthology XX.

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Stewart, 26, has reportedly been dating the musician since early October, and was first spotted holding hands with her while walking around New York City. St. Vincent was last linked to supermodel Cara Delevingne, but the two reportedly split this past summer after dating for one year.

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