President Bush's daughters, Jenna and Barbara, wrote Sasha and Malia Obama a friendly letter in the Wall Street Journal with some heartfelt hints on how to enjoy their time at 1600 Pennsylvania Avenue.

First, they told the girls to make sure to slide down the banister of the solarium.

Then, to be sure to go see their dad throw the first pitch at a Major League Baseball game.

And if they are ever traveling over Halloween, dress up and trick-or-treat down the aisle of Air Force One.

Lastly, the Bush twins told the Obama girls to always remember who their dad really is. A man who loves them deeply.

 Read the entire letter to the Obama girls here.