= Sunday best or Sunday go-to-meeting clothes {n. phr.}, {informal} Best clothes or outfit of clothing. * /The cowboy got all dressed up in his best bib and tucker to go to the dance./ * /Mary went to the party in her Sunday best and made a hit with the boys./ Compare: GLAD RAGS.
BEST BIB AND TUCKER
Meaning of BEST BIB AND TUCKER in English
Slang English vocab. Английский сленговый словарь. 2012