>>> our final story tonight is a long way from a time when walt disney reportedly asked annette funicello not to show her navel in all those 1960s beach movies. when former disney star miley cyrus stepped on stage at last night's mtv video music awards, it left many of the 10 million viewers wondering what exactly it was they were watching. we get the story from nbc's anne thompson. >> reporter: if miley cyrus wanted to provoke a reaction at last night's video music awards she got it. in an outfit and performance that left little to the imagination. the former disney star gyrated on stage with robin thicke singing his hit song, "blurred lines." >> i will tell you miley cyrus is no longer hannah montana. >> reporter: hannah montana, the role that made cyrus famous, was an innocent, all-american teenager who led a secret double life as a pop star. brooke shields played montana's mom in the series. >> i want to know who is advising her and why it is necessary. >> reporter: the performance lit up twitter, setting a record of 306,000 tweets were minute. c.j. farley, blogged for the "wall stree