Miley Cyrus is hearing about her infamous twerking performance at the MTV Video Music Awards from her TV grandmother. Vicki Lawrence who played Miley's "Mamaw Ruthie" from 2006 to 2011 on the Disney Channel's "Hannah Montana. Said she doesn't admire the performance itself, but she admits it was a PR triumph. Lawrence began working on "Hannah Montana" back when Miley was barely a teenager. She says even then, she could tell Cyrus had star potential. As to whether the outrageous twerking episode was a good career move in the long run, Lawrence says she isn't sure as (Miley) might be very smart yet she might be really wrong."