formalwear
eveningwear
evening dress
evening clothes

There're about six of them planted here in evening clothes.

This feeling was reflected in the evening clothes as well.

A couple came in from the street wearing evening clothes.

The gentleman who opened the car door was in evening clothes.

But they will all be standing on a stage this time, wearing evening clothes.

She asked him to make a collection of evening clothes.

Instead she was looking at a wolf in evening clothes.

The girl was accompanied by a man in evening clothes.

Just then, a pair of men in evening clothes came into action.

This time, his evening clothes look better than they ever have.