It’s hard to believe the Obamas have been America’s first family for nearly eight whole years. In that time, Barack’s gotten a few gray hairs, Michelle seems to have aged backward, and the two first daughters? Well, they’ve grown up before our very eyes. Earlier this year the sisters made a debut of sorts at their very first state dinner with Canadian Prime Minister Justin Trudeau, and the transformation they’ve made from grammar school girls to nearly college-bound has never been more apparent. Even the president couldn’t help but comment on how the time has flown, choking up when he spoke about Malia’s impending departure from the nest. Take a look back at Malia (now 18) and Sasha Obama (now 15) over the years.