Actor BradleyCooper speaks at the closing session of the National Conference on Mental Health, Monday, June 3, 2013, in the South Court Auditorium on the White House complex in Washington. The conference is part of the Administration’s effort to launch a national conversation to increase understanding and awareness of mental health. (AP Photo/Susan Walsh) Bradley Cooper at the White House Monday. (Susan Walsh/AP Photo)

Celebvocates! You never know where they’ll show up. Bradley Cooper, star of “The Hangover Part III,” cast some stardust on the White House conference on mental health Monday. While fellow actor Glenn Close was on hand to share the struggles of her bipolar sister and a nephew hospitalized with schizoaffective disorder, Cooper acknowledged his connection is more remote, starting with his role as a bipolar man in “Silver Linings Playbook.” “I’m sort of here by accident,” he said. “It’s not that I didn’t know about mental illness. I think it’s just that I just didn’t see it as a part of my life.” It’s the first time he’s been back to D.C. with the mental-health message since the height of the movie’s Oscar campaign, when Cooper met with Joe Biden on the topic and held forth at a Center for American Progress forum on mental health.

Other celebvocates this week: Maggie Gyllenhaal joins D.C. nonprofit board; Steven Seagal joins congressional delegation to Russia

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