Elsewhere: Jenna and Barbara Bush give advice to the Obama girls

Some of the advice:

—If you’re traveling with your parents over Halloween, don’t let it stop you from doing what you would normally do. Dress up in some imaginative, elaborate costume (if you are like us a pack of Juicy Fruit and a Vampiress) and trick-or-treat down the plane aisle.

—When your dad throws out the first pitch for the Yankees, go to the game.

And the best advice (on their father):

Many people will think they know him, but they have no idea how he felt the day you were born, the pride he felt on your first day of school, or how much you both love being his daughters. So here is our most important piece of advice: remember who your dad really is.