Don’t Say: “Are you pregnant?”
Why: You ask, she’s not, and you feel totally embarrassed for essentially pointing out that she’s overweight.
Instead Say: “Hello” or “Great to see you” or “You look great.” Anything besides “Are you pregnant?” or “What’s the due date?” will do. Save yourself the humiliation and never ask.

Don’t Say: “Do you plan on breast-feeding?”
Why: The issue can be controversial, and she may not want to discuss her decision publicly.
Instead Say: Nothing. Unless you’re very close, don’t ask. If you slip, make up for the blunder by adding, “And do you feel comfortable telling me?”

Don’t Say: “Were your twins natural?” or “It must have been hard for your child’s birth parent to give him up.”
Why: You’re suggesting that natural conception is better than in vitro fertilization (IVF) or adoption.
Instead Say: To a parent of multiples, try a light “Wow, you have your hands full!” To an adoptive parent, say the same stuff you would to any other parent: “She’s adorable!” or “How old is he?”

Expert: Kim Hahn, founder and chief executive officer of Conceive magazine.