He dressed in more or less Ivy League fashion casually, informally, and yet with an occasional touch of flamboyance. As soon as he could afford to do so, he indulged his interest in good clothes freely and took inordinate pride in his tailor. He often dragged along his friends to fittings which came to be known as “Lenny’s dress rehearsals.”

—From Leonard Bernstein: A Biography for Young People (1960) by David Ewen.