Last night, Michelle Obama nailed her Democratic National Convention speech, but it was her manicure that stole the show. Her nails – painted in a smoky blue (that just so happened to match the hem of her Tracy Reese dress) – nearly broke Twitter.

Okay, I exaggerate…but people were going cray cray trying to guess what brand and shade the F.L.O.T.U.S. was sporting.

Suzi Weiss-Fischmann, Executive VP & Artistic Director for OPI, thinks she might know the answer.

“I can’t say for certain, but it sure looks like I Don’t Give a Rotterdam to me.” I Don’t Give a Rotterdam is one of the best sellers of OPI’s spring/summer Holland Collection. “I had the privilege of meeting Michelle Obama about a year and a half ago. She told me how she was a big fan of OPI. Politics aside,” says Weiss-Fischmann, “you’ve got to love a woman who loves her nails.”

Update: MSNBC reports that the First Lady wore Artistic Colour Gloss Soak Off Color Gel in “Vogue.”