The Formula One heiress received the special wedding gift from PETA after it saved the bird from a French foie gras farm that supplies Fortnum & Mason.
The animal rights group moved the goose to a French animal sanctuary and named it Tamara in honour of the 28-year-old.
Ecclestone has starred in a PETA advert against foie gras and personally convinced Formula One events to stop serving the controversial food product.
Two male geese were also rescued at the same time as Tamara and were named Sir Roger – in honour of Sir Roger Moore, who narrated PETA’s video exposé of foie gras farms – and Prince Charles, in honour of the Prince of Wales, who refuses to serve foie gras at royal events.
“Tamara has worked hard to save geese such as Sir Roger and Prince Charles from the cruelty of foie gras farms, and now the joy of her wedding will be shared with the joy of freedom that these geese now experience every day,” PETA Associate Director Mimi Bekhechi said.
“PETA wishes Tamara all the happiness that a kind-hearted, determined advocate for animals deserves.”
Celebrities including Twiggy, Ricky Gervais, Kate Winslet and Pamela Anderson have all taken a stand against the sale of foie gras, which is illegal to produce in the UK.