 In the US, they were not as popular but appeared in the 1963 film "Sodom and Gomorrah" as dancers and appeared on the cover of Life Magazine in that year.They made their American television debut on 12 February 1963 on the Red Skelton Hour, acting in his comedy sketch and dancing and singing a duet.Their parents, Paul and Elsa, sent them to ballet classes at the age of six, and they joined the Leipzig Opera's child ballet program at age 11.