The former US first lady was present at the gallery for the American Portrait Gala, a biennial event that raises funds for the museum’s exhibitions.
While at the historic art museum, Michelle was photographed standing next to the famed portrait of the 44th US president, which shows him sitting on a chair with his arms folded against a bright backdrop of foliage as he stares into the eyes of the viewer with a self-assured confidence.
The picture, which was captioned with a sole heart emoji, has garnered more than 1.4m likes and thousands of praiseworthy comments for the couple.
“How amazing is that to see your husband’s portrait on display!!! Love them both!” one person wrote.
“You’ll never know just how much you are missed,” another commented.
Someone else described the painting as a “beautiful portrait of a good man, whose decency and compassion will forever make him a cut above the rest”.
The portrait of Barack was painted by Nigerian-American artist Kehinde Wiley.
The painting was commissioned in 2017 and unveiled in February 2018, on the same day that a portrait of Michelle, by American painter Amy Sherald, was also revealed.
Wiley and Sherald were the first black artists to paint official portraits of a US president or first lady for the National Portrait Gallery in DC.
Following the reveal of her portrait, Michelle wrote on Instagram that as a young girl, she “never could have imagined this moment”.
“This is all a little bit overwhelming, especially when I think about all of the young people who will visit the National Portrait Gallery and see this, including so many young girls and young girls of colour who don’t often see their images displayed in beautiful and iconic ways,” she stated.
“The awardees of the Portrait of a Nation Prize reflect the mission of the National Portrait Gallery as handed down by Congress in 1962 by having made an impact on America’s history and culture,” said Kim Sajet, director of the portrait gallery.
The photographic portrait of Miranda, which depicts him as American founding father Alexander Hamilton, was captured by renowned photographer Mark Seliger.
Lauding Miranda on Instagram, Michelle stated: “He’s someone who has, in melody and rhyme and connection, painted as honest portrait of our country as I’ve ever seen.”