“The Party of the First Part” – Jean Hagen

Jean Hagen (born 3 August 1923) gave the performance of a lifetime as Lina Lamont in Singin’ in the Rain (1952).

Lina might look dumb but she’s formidable, in fact, and a scrapper!  Witness her resistance to replacement by actresses without her fog-horn / breaking-glass voice, when she reminds the studio head of Monumental Pictures about relevant clauses in her contract: