Michelle Obama had fans abuzz when she shared her own special Mother's Day tribute on social media, not only honoring her own mother, but also her daughters.MORE: Michelle Obama nailed this wedding dress style 26 years before Princess EugenieThe former First Lady took to Instagram with a rare throwback snapshot of herself with Sasha and Malia and her mother Marian.VIDEO: Michelle Obama opens up on life without Malia and SashaThe four looked remarkably alike in the stunning photograph, and Michelle penned a heartfelt tribute to the group to go along with it.She wrote: "Happy #MothersDay! I'm so thankful for the love, guidance, and care that my mom has instilled in me.