What's Trending Presents The 1st Annual Tube-A-Tweet-A-Thon Benefiting Covenant House

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Actresses Hannah Hart, Emma Caulfield and Grace Helbig attend What's... News PhotoAnnual Event,Arts Culture and Entertainment,Attending,California,Celebrities,Deed,Emma Caulfield,Grace,Hollywood - California,Looking At Camera,Making Money,Portrait,USA,Vertical,Waist UpPhotographer Collection: WireImage 2012 Michael BezjianHOLLYWOOD - DECEMBER 13: Actresses Hannah Hart, Emma Caulfield and Grace Helbig attend What's Trending Presents The 1st Annual Tube-A-Tweet-A-Thon Benefiting Covenant House on December 13, 2012 in Hollywood, California. (Photo by Michael Bezjian/WireImage)