A Fish Called Wanda ( 1988 )

Sexy American diamonds lover Wanda and her boyfriend Otto are in England to plot alongside George and Ken the robbery of a diamond collection. Wanda and Otto want the stolen diamonds for themselves, and inform the police about George not knowing that he has already moved the diamonds to another secret place. Wanda thinks the best way to find out is by getting close to George's lawyer - Archie Leach. (imdb)