Julianne Moore wins Oscar 2015's Best Actress title

Julianne Moore' has claimed the title of Best Actress at the 87th Academy Awards for outstanding performance in 'Still Alice.'

The 54-year-old actress beat out Marion Cotillard in 'Two Days, One Night,' Rosamund Pike in 'Gone Girl,' Reese Witherspoon in 'Wild,' Felicity Jones in 'The Theory of Everything.'

The film by director Wash Westmoreland revolves around a renowned linguistics professor at Columbia University Dr. Alice Howland, played by Moore, who comes face-to-face with a devastating diagnosis: early-onset Alzheimer's disease, and as she struggles to hang on to her sense of self for as long as possible, her family watch helplessly as their mother disappears more and more with each passing day.