“A global art phenomenon, [Vanessa] Beecroft is best known as the bard of bulimia (she has serious food issues) and for her infamous performance pieces in which she assembles dozens of naked women, accessorized in wigs or chains or Gucci, and displays them before an audience of elites, who sip champagne and stare.” Her latest project has taken her to Sudan, where she’s stirred up new controversies.