Kristin Davis speaking during the Oxfam Sisters on the Planet Summit in Washington, DC on Wednesday. (Kris Connor/Getty Images)

Another look at the celebrities with a cause making their way to the capital. Wednesday’s visitor: Kristin Davis

Occasion: Oxfam America’s Sisters on the Planet Summit.

Venue: A conference room at the Doubletree Hotel.

Bona fides: Six years as an Oxfam advocate; a decade-long run as Charlotte in “Sex and the City.”

Backup: White House senior advisor Valerie Jarrett, Oxfam America President Ray Offenheiser, who joined Davis in exhorting volunteers to lobby Congress.

What she wants: Funding for women farmers overseas; Farm Bill reforms to allow U.S. food aid to be grown overseas.

How she looked: Exquisitely appropriate (was Charlotte really just a role?). Simple black dress, modest jewelry, shiny hair, dark-red peeptoe pumps.

How she sounded: Enthusiastic, bursting with stories about meeting women in Ethi­o­pia getting a foothold in agriculture. “It seems like such a little thing, having goats. But the women told us, ‘No one asked for our opinion before we had these goats.’”

Whom we passed up for her: Nick Cannon testifying about children’s online privacy; “American Idol” runners-up Jason Castro, Melinda Doolittle and Elliott Yamin touting the fight against malaria.