Check out the ways A-listers like Brad Pitt and Christina Aguilera give back
Kelly and Sharon Osbourne
Kelly works closely with The Trevor Project, a national 24/7 hotline offering suicide counseling and support for gay, lesbian, bisexual and transgender youth. "I've had [kids] come up to me and say, 'Thank you for speaking up for me,'" says the star. "Nothing makes me feel better!"
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