Kristen Bell (Chris Pizzello/AP)

Kristen Bell lunching at Estadio on 14th Street Saturday afternoon. Casually dressed in a prime window seat. The actress was in town doing the celebvocacy thing, discussing genocide at the Clinton Global Initiative University conference of do-gooder college students that convened at GWU this weekend.

Christine Lagarde dining at the new Rasika West End on Saturday. The new IMF chief was with a 20-something man, possibly one of her sons.

Giada de Laurentiis late-lunching (or early-dining?) with two female friends Saturday afternoon at Graffiato — yes, same place she dined back in November. The town’s full of restaurants, Giada! Black blazer, white shirt, black Burberry trench. The professional foodie, in the area for some book signings, resurfaced Sunday night at Proof, where she had the veal.