We've said it before, and we'll say it again: Keep it simple. Whether it's a pretty dress with clean lines, or a sleek pantsuit with neutral hair and makeup, our conclusion is that the less muss-and-fuss, the better.
Color is also key. Stars stunned in hues that worked perfectly with their coloring; whether it was a white frock paired with dark hair, or pale pink on sun-kissed skin, these celebrities know which shades work for them.
Check out our roundup of the week's best-dressed stars and keep clicking to see previous weeks' contenders. Don't forget to head over to our roundup of the week's worst-dressed here.