"Thank you for leading our country," she simply stated. "You will be missed."
In addition to her sweet post, the Selfish author also shared a series of pics featuring the 55-year-old politician. One photo shows Obama with his hands crossed, smiling while having a conversation with the mother of two.
In another snap, the fashionista poses next to Obama, with her husband, Kanye West, and their now 3-year-old daughter, North, by her side.
And judging by the third pic, Little Nori seemed to enjoy her visit to the White House!
Mrs. West wasn't the only one from her famous family to honor Obama on Friday, however. Her sister, Khloe Kardashian, also shared a pic of the former president and his wife, Michelle Obama, quoting him in her caption.
"'I'm asking you to believe. Not in my ability to bring about change -- but in yours,'" the Revenge Body star wrote. "Terribly sad to see you go but honored I was able to watch firsthand. I hope our history books will do you justice."
A day before leaving office, Obama penned a heartfelt letter to the American people, thanking the country for giving him "the honor of serving as your 44th [president.]"
"You made me a better President, and you made me a better man," he wrote. "Throughout these eight years, you have been the source of goodness, resilience, and hope from which I've pulled strength."
"All of us, regardless of party, should throw ourselves into that work -- the joyous work of citizenship," his message continued. "Not just when there's an election, not just when our own narrow interest is at stake, but over the full span of a lifetime. And when the arc of progress seems slow, remember: America is not the project of any one person. The single most powerful word in our democracy is the word 'We.' 'We the People.' 'We shall overcome.'"