Watts failed to hide pregnancy from director's sister

Naomi Watts tried to keep her pregnancy a secret from the cast and crew of her new movie 'Eastern Promises', but couldn't hide the good news from the director's sister, who was the film's costume designer.

The actress discovered she was expecting boyfriend Live Schreiber's child two weeks into the shoot and her happiness quickly turned into a struggle to fight tiredness and nausea - so as not to reveal her state.