The actress is said to be taking her upcoming cameo so seriously that she's learning the language from fellow dancers.
"She's been practising for hours every day and trying to live like they do in France - she even tried snails," a source told The Sun.
It was announced earlier this week that Brook is to appear naked on stage in the French Forever Crazy cabaret show in London from November 1 to 8.
"Some people dream of winning an Oscar or a gold medal, I have dreamed for as long as I remember of becoming a Crazy Horse dancer," Brook said of her latest project.
"When I heard the show was coming to London I just knew I had to be a part of it and I am ecstatic to be making a small part alongside the truly amazing Crazy Girls in London!"
Dita Von Teese, Carmen Electra and Pamela Anderson have previously performed alongside the Crazy Girls in shows around the world.
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