be in (one's) Sunday best(redirected from be in our Sunday best)
be in (one's) Sunday best
To be wearing one's very best clothes, as one would wear to a Sunday church service. We're all in our Sunday best already, so why don't we go for lunch at a fancy restaurant? This is going to be a formal event, so we all need to be in our Sunday best.
See also: Sunday
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.