The actress is said to be taking her upcoming cameo so seriously that she's learning the language from fellow dancers.
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"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.
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"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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