Sunday best
US /ˈsʌn.deɪ best/
UK /ˈsʌn.deɪ best/
1.
one's best clothes, worn for a special occasion or to church
:
•
She always wears her Sunday best when she goes to church.
•
He was dressed in his Sunday best for the wedding.
one's best clothes, worn for a special occasion or to church