Michelle Obama’s skirt held a tearjerker tribute Barack didn’t see coming.

The former first lady, 62, paid homage to her late mom at a Tuesday reception celebrating the upcoming opening of the Obama Presidential Center in Chicago.

Her custom Acne Studios pencil skirt bore a portrait of Marian Robinson, who died in 2024.

Barack Obama, 64, was visibly emotional on stage, prompting his wife to address the room.

“I am so proud of my husband. He’s really messed up, I’m giving him some time, because this beautiful skirt that my stylist Meredith Koop picked out, that is a portrait — my favorite portrait of my mom — he didn’t know it existed until just a few minutes ago,” she said.

“I’ve had a few weeks to settle down in the beauty of this skirt, but it’s messing him up for good reason. But Marian would have been so proud, she was so proud of her son-in-law and the man that he is and has been to our family, always dreaming probably way too big, but always pulling it off.”

The sepia-toned design — styled with a chocolate brown T-shirt, slim belt and slingback pumps — riffed on Acne Studios’ fall 2026 collection inspired by Dutch photographer Paul Kooiker.

Koop — Obama’s longtime collaborator and the co-author of “The Look,” a recent retrospective on the former first lady’s most memorable fashion moments — orchestrated the tribute without tipping off Barack.

Earlier this year, Koop also helped Obama re-create her 1980s Princeton-era denim outfit for an appearance on the “Call Her Daddy” podcast.

Barack later shared a video from the event on Instagram, calling his mother-in-law and her late husband Fraser Robinson “salt of the earth, bedrock people.” He recalled how Marian “made a home for Michelle and Craig here on the South Side of Chicago, not with a lot, but with a lot of love and hope and perspective and wisdom.”

The center officially opens to the public June 19.