Former President Obama on Sunday marked Mother’s Day by sharing a tribute to the “perfect role model,” former First Lady Michelle Obama Michelle LeVaughn Robinson ObamaBlack stars reimagine 'Friends' to get out the vote Obama shares phone number to find out how Americans are planning to vote Michelle Obama: 'Don't listen to people who will say that somehow voting is rigged' MORE.

"Happy Mother's Day to the most caring, brilliant, funny, and grounded woman I know—a perfect role model not just for our daughters, but so many others," Obama said in a Facebook post accompanied by a picture of Michelle with their daughters Malia and Sasha.

Michelle Obama also marked the holiday by paying homage to her mother, Marian Robinson, with a post on Twitter.

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"From an early age, my mom saw that I had a flame inside me and she never tempered it," Michelle Obama said of her mom. " Mom, thank you for kindling that fire within me, and for your example as a mother and a grandmother to our girls.

"We would never be who we are today without you."

From an early age, my mom saw that I had a flame inside me and she never tempered it. Mom, thank you for kindling that fire within me, and for your example as a mother and a grandmother to our girls. We would never be who we are today without you. #HappyMothersDay, Mom. Love you. pic.twitter.com/2LYOS7jzPD — Michelle Obama (@MichelleObama) May 12, 2019

President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE wished Americans "Happy Mother's Day" in a Facebook post. First Lady Melania Trump Melania TrumpTrump privately blamed Black Americans for lacking initiative: report The Hill's 12:30 Report: Ginsburg lies in repose Melania Trump: Ginsburg's 'spirit will live on in all she has inspired' MORE voiced the same message to her followers on Twitter.

UPDATED 1:23 p.m.