Academy Award attendees are known for gorgeous couture looks that make for memorable celebrity fashion moments. From Halle Berry's groundbreaking Elie Saab to Cher's naked Bob Mackie, here are our picks for the 40 best Oscar looks of all time.

The Academy Awards red carpet has long been one of the most glamorous fashion stages in the world. Every year, celebrities arrive in show-stopping ensembles, turning Hollywood’s biggest night into a celebration of style as much as cinema.

From the dazzling to the daring, classics and couture, there is the unofficial awards before the awards, best dressed and worst.

Add Yahoo as a preferred source to see more of our stories on Google. In case one has forgotten, the whole point of walking a red carpet is to show off what you’re wearing ... and sometimes what you’re not. Which brings us to Chappell Roan at Sunday ...