Sunday best

US /ˈsʌn.deɪ best/
UK /ˈsʌn.deɪ best/
"Sunday best" picture
1.

最好的衣服, 禮服

one's best clothes, worn for a special occasion or to church

:
She always wears her Sunday best when she goes to church.
她去教堂時總是穿她最好的衣服
He was dressed in his Sunday best for the wedding.
他穿著他最好的衣服參加婚禮。