The daughters of former President George W. Bush have written a letter to Malia and Sasha Obama about handling their futures beyond their father's presidency.

Published in TIME Magazine, Barbara Bush and Jenna Bush-Hager advise the outgoing First Children on their next move.

"In eight years, you have done so much. Seen so much", they write. "You stood at the gates of the Robben Island cell where South Africa’s Nelson Mandela was imprisoned for decades, your arms around your father. You traveled to Liberia and Morocco with your mom to talk with girls about the importance of education - girls who saw themselves in you, saw themselves in your parents, saw who they could become if they continued to study and learn.

"We have watched you grow from girls to impressive young women with grace and ease."

The former First Children explain that Sasha and Malia are on the cusp of entering a "another rarified club", and although it wasn't a club they asked to be a part of, the pair have much to look forward to.

"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."

Jenna and Barbara told the girls to enjoy college, make mistakes ("you are allowed to"), and said they will continue to root for them as they begin their next chapter.

Where are they now?

Twins Jenna Bush Hager and Barbara Bush are the only children of George W. Bush and his wife Laura. They are fraternal twins.

Jenna is now a correspondent for NBC, while Barbara founded the Global Health Corps. In the letter, the girls explain that Barbara changed her major following an encounter they had while their dad was in office.

The letter can be read here.