Lada Edumund Jr. Lada is best known as being the Go-Go dancer from the 1960's television show, Hullaballo. She was the one that danced in the cage (but I thought they all danced in a cage....). However I recognized her from being in the movie, Bye Bye Birdie. And sure enough when I looked it up, she played the part of Penelope Ann in the 1960 film.