That’s “Cosmo” as in Cosmopolitan magazine.
Here’s excerpts from this report in Fishbowl DC (“Where Politics and DC Media Mesh”):
Gov. Maggie Hassan (NH), Reps. Tulsi Gabbard (Hawaii), Elizabeth Esty(Conn.), and Grace Meng (N.Y.) attended “The Cosmo 100” luncheon at Michael’s restaurant in Manhattan. Cosmopolitan’s new Editor-in-Chief Joanna Coles hosted the luncheon for New York’s 100 most influential women including Sarah Jessica Parker, CBS’ Gayle King, Lara Spencer, Deborah Roberts … Diana von Furstenburg … Jessica Seinfeld … Lauren Bush Lauren and more.