The actress - who famously starred in cult classic `The Wicker Man` - collapsed on her way to a birthday dinner at a fans` event in London.
She was rushed to hospital and passed away yesterday (24.11.10).
Ingrid`s daughter Steffanie Pitt said last night: "It was heart trouble. She had a couple of bad years, health-wise.
"She was a fantastic woman. Anyone who knew my mother would say she was incredibly feisty."
The polish-born beauty - who survived a Nazi concentration camp - started acting in Germany before moving to the UK for her big break in 1968 movie `Where Eagles Dare` alongside Clint Eastwood and Richard Burton.
She later became dubbed "England`s First Lady of Horror" because of her work with legendary studio Hammer Film Productions and her roles in 70s classics such as `The Vampire Lovers` and `Countess Dracula`.
Ingrid also appeared in a number of TV shows, including long-running British sci-fi series `Doctor Who`.
`Wicker Man` director Robin Hardy has paid tribute to her, saying: "She was a very attractive person in every sense.
"She was a perfectly good actress but a very decent person as well."
Daughter Steffanie added she hoped fans would remember her as Countess Dracula with the "wonderful teeth and bosom