Tickets for the formal evening, $500 and $1,000, from 212-877-0600.

Lucas was dressed in conservative, formal evening black.

He murmured confused apology; it was hardly the way to begin a formal evening.

There's also free garment pressing on formal evenings and lots of other perks.

The black coats appear on multiple occasions, from daytime business appointments to formal evenings.

"We are half expecting someone to show up dressed as a banana, but it's a formal evening with costume masks."

Or possibly a more formal evening dress which, off the peg, you can always have altered to fit exactly?

Many cultures have formal evening and day dress, for example:

These styles are a fine way of dressing up for formal evenings that don't require a ball gown.