Another responded: “Let me know what you come up with — maybe a discount if we buy in bulk.”

Though a brand spokesman acknowledged “there has been a lot of interest and excitement around her look,” he would not say anything more about whether there were plans to commercialize the suit. That has not, however, deterred the women determined to wear white to honor those who came before.

“It started as fun and moved into having all this meaning, both historic and cultural,” said Lisa J. Banks, Ms. Katz’s law partner and a co-founder of their firm.

She is not the only one who thinks so.

Since the Democratic National Convention, “white pantsuits” have become the most-searched color of pantsuit according to data from Lyst, the global e-commerce platform that acts as a centralized shopping bag for thousands of retailers. Searches for white pantsuits are now 7 percent more prevalent than searches for black pantsuits which, before the convention, were the most-searched color. (Eighty percent of the searches originated in the United States.)

Katherine Ormerod, Lyst’s editorial director, said, “The pantsuit has had a massive resurgence in interest with a 460 percent uplift since January 2016. The interest in white pantsuits in particular has certainly confounded expectations — especially as we usually see a seasonal dip for white color ways across every category.’’

There is precedent for this kind of desire and action, in any case. In 1978 when thousands of women marched on Washington in support of the Equal Rights Amendment, they did so led by Gloria Steinem and Betty Friedan, with the majority of the marchers wearing white. Ms. Greenberger noted that the law center often suggests that women wear white at public demonstrations.

The point is, the women said, that clothing is a symbol that is universally accessible, allowing anyone who can dig up a garment (“Once all I had was white puffer jacket, but that was fine,” Ms. Greenberger said.) to express their commitment and connection to a story greater than their own.