Michelle Obama wears portrait skirt in moving memory of mother Marian Robinson [Courtesy]

Michelle Obama has paid a heartfelt tribute to her late mother, Marian Robinson, during a special reception marking the upcoming opening of the Obama Presidential Center in Chicago.

Speaking at the event, the former first lady said her outfit carried deep personal meaning, revealing that her skirt featured a portrait of her mother. She noted that her husband, former President Barack Obama, had only just realised the detail.

“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 favourite portrait of my mom, he didn't know it existed until just a few minutes ago,” Michelle, 62, 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.”