Hayley Mills recently appeared on the “Rosebud Podcast” podcast (via The Daily Beast ) and spoke about losing out on the millions of dollars she made as a child star. Mills was a Disney icon in the 1960s as the star of “ The Parent Trap ” (1961), plus movies such as “That Darn Cat!” (1965) and “In Search of the Castaways” (1962). She was contracted by the studio, but the money she made as an actor ultimately vanished because “I gave it to the tax man.” “It was rather a big chunk,” Mills said. “It was most of it because it was all put into a trust fund, because [British] supertax was 90 percent in those days, so they had to do something.” Popular on Variety During the height of her child stardom, Mills said she was told to put her earnings into a trust by the financial advisor who worked with her father, the actor Sir John Mills. The advisor, Stanley Passmore, was “not very well” in terms of his guidance. “The trust company was set up for me.…