Image by tncountryfan via FlickrSugarland will sing an emotional version of its song "Stand Up" tonight (June 8) at the CMT Awards (airing at 8 p.m. ET), and the performance will have a special meaning for the Gilberts, a family from Joplin, Mo., whose home was devastated by a tornado last month.During a rehearsal for the show on Tuesday, Tiffani and Lexi were reunited with their parents, Amy and Eric, for the first time since May 22, apart from a few hours they'd spent together viewing the wreckage of their home. Tiffani and Lexi Gilbert will will wave flags and sing along during the country duo's performance, during which producers will call upon viewers to make donations to the American Red Cross. Sugarland recently released a live version of the song recorded with Little Big Town -- entitled "Stand Up For Tornado Relief," the performance is available for download on iTunes, with proceeds also going to the Red Cross for tornado relief in Alabama and Joplin.
