According to the AP, the DNC marked the second time Obama has worn a dress by Siriano. The first was the black dress she wore at the July 12 memorial service for the five police officers killed by a sniper in Dallas.

Obama’s outfit for the DNC didn’t speak as loudly as her words—to most observers it was likely just a beautiful dress that recalled the blue associated with the Democratic party. But as when she wore a dress by Cuban-American designer Narciso Rodriguez for her husband’s State of the Union address in January, the decision conveyed thoughtfulness on the First Lady’s part. (It also offered a stark contrast to Trump’s relationship with clothes. He was called out at the DNC in a video that lambasted him for manufacturing his own clothing line overseas, while on the campaign trail he has decried foreign manufacturing by American brands.)

Obama’s choice further raises Siriano’s profile. When you wield that kind of influence, it’s all the more powerful to select a designer whose work reflects the values you are trying to espouse.

📬 Sign up for the Daily Brief

Our free, fast, and fun briefing on the global economy, delivered every weekday morning.