In Tolstoy's Words: Princess Betsy Tverskaya

The third circle with which Anna had ties was pre-eminently the fashionable world -- the world of balls, of dinners, of sumptuous dresses, the world that hung on to the court with one hand, so as to avoid sinking to the level of the demi-monde.... Her connection with this circle was kept up through Princess Betsy Tverskaya, her cousin's wife, who had an income of a hundred and twenty thousand rubles, and who had taken a great fancy to Anna ever since she first came out, showed her much attention, and drew her into her set....

Anna Karenina, Part II, Chapter 4