do someone proud

1

Also, do credit to someone. Be a source of honor, distinction, or pride. For example, She did us proud, handling the problem with such aplomb, or Your new title does you credit. [Early 1800s]

2

Treat someone or oneself generously or extravagantly, as in You really did us proud with that banquet. [Early 1800s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.