Admiral Ackbar....

DEAR JERKASS,
I recently started a summer job in the fitting room of a clothing store. Customers often ask me what I think about their outfits, and the most common question is, "Does this make me look fat?" How do I answer if the outfit does make the woman look fat? These women want honesty, but how do I avoid sounding rude? -- CONFLICTED IN NEW JERSEY

DEAR LIAR,
The best answer is "I don't think the outfit has anything to do with it".
Or
"I'm paid to lie to you so you'll buy stuff.  You can take this any way you want: I think it looks great" and then mentally say "but not on you."