wearing one's Sunday suit:

Completely naked . See naked for synonyms.
See Also: afghan, ball gown, banns, bans, bikini, in full feather, in full fig, in gear, naked, stay in the closet, Sunday clothes, wearing a birthday suit, whistle and flute

Link to this page:
<a href="https://sex-lexis.com/Sex-Dictionary/wearing+one%27s+Sunday+suit">wearing one's Sunday suit</a>

Word Browser