Marie Claire editor in chief Joanna Coles took an elegant tumble down a short flight of stairs after introducing Katie Holmes at the magazine’s Women on Top event yesterday afternoon. Coles, wearing 6-inch purple Yves Saint Laurent heels, fell as she left the stage in front of 200 luncheon guests at the Hearst Tower. Holmes in turn admitted she once fell in Lanvin heels as she was carrying her daughter, Suri, in the street. “She was glad she didn’t drop her,” our spy said. Coles later said she’s “taking her life into her hands by continuing to wear” the shoes, “but that’s how much I love fashion.” The event recognized women under 40 who are breaking barriers.