Sienna Miller - We love this navy Oscar de la Renta dress with a high neck and lace train. Sienna makes the dress the statement by keeping the hair slicked back and simple.
Reese Witherspoon - This Tom Ford dress is figure hugging in all the right places and we love the off shoulder detail.
Sophie Hunter & Benedict Cumberbatch - Sophie wears a Lanvin dress with an on trend slit.
Pictures from http://www.theguardian.com/fashion/gallery/2015/feb/23/oscars-fashion-the-hits-and-misses-of-the-red-carpet