President Barack Obama and his daughters, Sasha, left, and Malia, at the turkey pardoning ceremony in 2014. REUTERS/Larry Downing

Former President George W. Bush's daughters wrote a letter to President Barack Obama's daughters offering them advice on life after the White House.

In the letter, which was published by Time, Bush's daughters, Barbara and Jenna, congratulated Sasha and Malia Obama on living "through the unbelievable pressure of the White House" and joining the "rarified club" of former first children.

"You will be writing the story of your lives, beyond the shadow of your famous parents, yet you will always carry with you the experiences of the past eight years," the letter read.

The letter encourages the Obama sisters to enjoy college and cherish the moments in the White House that ultimately shaped their lives.

"Take all that you have seen, the people you have met, the lessons you have learned, and let that help guide you in making positive change," the Bush sisters wrote.

After their father's presidency, Jenna Bush Hager became a teacher, writer, and later an NBC News correspondent. Barbara Bush became a healthcare activist.

Malia Obama will attend Harvard University this year. Sasha Obama, who at the start of her father's presidency was the youngest child living in the White House since the Kennedy administration, will finish high school in Washington, DC.