– Katy Perry brunching at Blue Duck Tavern Sunday. Low-key meal with just her agent the morning (okay, afternoon) after White House Correspondents’ dinner festivities. Resurfaced in Logan Circle that night for a late dinner at Le Diplomate. We kept just missing the pop star at the big dinner, though she was apparently hard to miss. (“Katy Perry bumped into me and almost had a wardrobe malfunction,” a national-security writer told us of the star’s stunning celery-green straining-to-the-bursting-point gown. “Anything could have set it off.”) Updated 5 p.m.