Bush sisters pen heartwarming letter to Malia and Sasha Obama

Jenna Bush-Hager and Barbara Bush offered words of encouragement in a letter to Malia and Sasha Obama as they prepare to leave the White House.

The piece was published by Time Thursday night, and features the Bush sisters recalling the first meeting between the two presidnetial families, as well as some words of advice for post-White House life.

The daughters of former President George W. Bush reminisced about first meeting the Malia, who is now 18-years-old, and Sasha, 15, during their transition into the White House in 2008.

"Eight years ago on a cold November day, we greeted you on the steps of the White House. We saw both the light and wariness in your eyes as you gazed at your new home," the Bush sisters said in the article.

Jenna and Barbara also congratulated Malia and Sasha for what they've accomplished as first daughters. "In eight years, you have done so much," the Bushes said. "You attended state dinners, hiked in national parks, met international leaders and managed to laugh at your dad's jokes during the annual Thanksgiving turkey pardon, all while being kids, attending school and making friends."

"We have watched you grow from girls to impressive young women with grace and ease," the former first daughters said in the letter.

Jenna Bush-Hager is now a correspondent for the Today show while Barbara Bush is a co-founder and the CEO of Global Health Corps.

In terms of advice for life after the White House, the Bushes encouraged the Obama sisters not to forget their time as first children. "Never forget the wonderful people who work at the White House."

They also empathized with the trials and hardships that come with being apart of the first family. "We know it wasn't always easy—the two of you and the two of us were teenagers trailed by men in backpacks—but they put their lives on hold for us."

As the Obamas head into the world as young women, Jenna and Barbara Bush poked a little fun at their antics while in school. "Enjoy college. As most of the world knows, we did," the Bush sisters said.