It's the end of a (fashion) era!
President Barack Obama's final State of the Union address on Tuesday was a historic night for the Commander-in-Chief, but it also served as the last opportunity for Michelle Obama to show off her flawless first lady style -- and she pulled if off in a big way!
Michelle, who has managed to cultivate her own unique brand of modern-yet-timeless elegance during her years as the first lady, shined bright like a ray of sunlight in a sleek, form-fitting, gown that showed off her iconic arms and accentuated her beaming smile.
Michelle, 51, looked marvelous in the marigold sleeveless banded-bodice midi dress by Narciso Rodriguez, and the gleaming gown was the perfect way to celebrate her illustrious time in the White House.
As New York Times fashion critic Vanessa Friedman pointed out on Twitter, Michelle also rocked a striking Narciso Rodriguez gown in 2008, for her husband's historic election night victory, so there's a nice "symmetry" to her final State of the Union fashion choice.
A number of celebrities and fashion commenters also weighed in on Michelle's bold gown, heaping praise on the first lady for the "'60s-era glamour" her dress evoked.
At the address, Michelle sat next to an empty seat, which was left unoccupied as a tribute to "the victims of gun violence who no longer have a voice," according to a statement released by the White House on Sunday.
PHOTOS: Some of Michelle Obama's most fashionable moments
Michelle is known for her bold State of the Union styles. In January 2015, she wore a striking grey Michael Kors suit with a zip-up top that was identical to an outfit worn by Julianna Margulies' character, Alicia Florrick, on The Good Wife. Check out the video below for a look at Michelle's Good Wife style.