Munkey Diaries'Birkin's diary entries ultimately expose the toxic reality behind one of the 20th century's most glamorous couples' Sunday Times Jane Birkin actor, singer, songwriter, and model may have shot to worldwide fame through her relationship with Serge Gainsbourg and their controversial hit 'Je t'aime moi non plus', but it would be her wide ranging acting career and effortless Gallic cool that was to truly cement her legacy as an enduring international