While watching a national pageant recently, I could not help noticing one of the girls in the Top 5 descending the stairs very ungraciously. She was wearing a tight evening gown that flared just a bit at the bottom. Instead of stepping down with one foot on each step, she had to step down with the right foot, then the left foot on the same step. It was very awkward! Of course, safety comes first, but if your gown is too tight to descend stairs graciously, you need to wear a different style of gown.
I was taught that you stand at the top of the stairs with your head held high and shoulders back. Turn your body at slight angle away from the stair rail and place your hand on the rail. Don't grip the rail unless you start to fall. If there is no rail, you are on your own. Glide down the stairs gracefully. This takes practice, practice, practice y'all.
Above all, please don't clunk all the way down the stairs in a loud and tacky fashion.