DEAR MISS MANNERS:
Can you tell me a tactful way of letting a friend know that she is getting too fat?
GENTLE READER:
Can you tell Miss Manners a tactful reason for wanting to do so?

Judith Martin (b. 1938) American author, journalist [a.k.a. Miss Manners]

Miss Manners’ Guide to Excruciatingly Correct Behavior (1982)