Hollywood's biggest stars have taken to the red carpet for the 90th Academy Awards.<br /> This year's Oscars is expected to be dominated by politics, the Me Too and Time's Up movements, as well as a heated competition for best picture. <br />This year's Oscars is being hosted by talk show host Jimmy Kimmel for the second straight year. <br />Movies tipped for best picture include "The Shape of Water", "Three Billboards Outside Ebbing, Missouri", "Get Out" and Christopher Nolan's war epic "Dunkirk". <br />
