One's very best clothes, as one would wear to a Sunday church service. Instead of some big party, let's all get dressed up in our Sunday best and go for lunch at a fancy restaurant for my birthday!This is going to be a formal event, so please come dressed in your Sunday best.You can't wear jeans to a place like that! You need to be decked out in your Sunday best.
one's best clothing, which one would wear to church. (See also Sunday-go-to-meeting clothes.) We are in our Sunday best, ready to go. I got mud on my Sunday best.
One's finest clothes, as in They were all in their Sunday best for the photographer. This expression alludes to reserving one's best clothes for going to church; indeed, an older idiom is Sunday-go-to-meeting clothes ( meeting here meaning "prayer meeting"). [Mid-1800s]
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.