We want you to tell us who looked best this week by making your own Top 5 Fashion A-List from our editors' celebrity Look of the Day picks! Our favorites? The five stunning looks pictured above: Charlize Theron (in Stella McCartney), Julianne Moore (in Givenchy), Princess Charlene of Monaco (in Ralph Lauren), Danai Gurira (in Herve Leger by Max Azria), and Sandra Bullock (in Stella McCartney). Now that you know our faves, tell us yours by making your own Top 5 with InStyle.com’s A-list tool. Visit instyle.com/instyle/a-list and pick your top looks, then share them with your fashion-savvy friends on Facebook and Twitter. Head to the A-list maker right now to get started.