In fact, her necklace spelled out the word "vote."
Obama's custom necklace was made from Los Angeles-based jeweler Bychari by designer Chari Cuthbert.
The brand supports various social justice causes, including the Black Lives Matter movement.
The necklace was the top trending search on Google during the last hour of the convention and sales are through the roof.
"This has been the most incredible opportunity we could have asked for, I mean it doesn't really get much bigger than this," Cuthbert said.
"Michelle's stylist Meredith reached out to us and she asked us to make this necklace for Michelle, specifically" Cuthbert added.
Before this, Cuthbert said she had made a limited number in 2016 and 2018 to raise awareness about the primaries.
Her website orders come mostly through word of mouth and social media. After millions saw the necklace, Bychari is now slammed for orders - more than 500 orders as of Tuesday afternoon.
"Today was our busiest day that we've ever had," Cuthbert said.
She calls it a dream come true.
Cuthbert said the necklace worn by Obama cost more than $400, but depending on the chain length and other factors, it could cost anywhere from about $300 to as much as $1,200.
You can buy the 'vote' necklace on Bychari.com.
Michelle Obama at the DNC: Vote like your lives depend on it