On Saturday night, we were treated to a double-whammy of Tammy. In addition to a powerhouse performance of One Night Only, there was THAT stage invasion from her beloved nan to contend with! In fact, Tammy's audition was so awesome that it earned her a standing ovation from none other than Mel B, (and we all know that's no mean feat). Here, the talented singer talks about singing, siblings and starting over…
