Marilyn Monroe listens while smoking at Costello's restaurant in March 1955 in New York.

Marilyn Monroe takes the subway in Grand Central Station, March 24, 1955 in New York City.

Actress Marilyn Monroe rests her eyes wearing a white fur coat in the lobby of the Ambassador Hotel where she stayed at, March 24, 1955 in New York City.

Marilyn Monroe picks up a copy of the New York Daily Post newspaper at a newsstand in March 1955 in New York City.

Movie star Marilyn Monroe relaxes in her dressing room before riding a pink elephant through Madison Square Garden for a circus charity event, New York City, March 1955.

Actress Marilyn Monroe relaxes in a quiet moment in a restaurant in March 1955 in New York City.

Marilyn admires the cartoons on the wall, drawn by The New Yorker cartoonist James Thurber, at Costello's restaurant, March 1955.

Marilyn Monroe sits at a table in a restaurant in March 1955 in New York City,

Marilyn has a moment to herself in her dressing room before riding a pink elephant through Madison Square Garden for a circus charity event, New York City, March 1955.

Marilyn Monroe takes the subway in Grand Central Station, March 24, 1955 in New York City.

Marilyn Monroe leans over the balcony of the Ambassador Hotel in March 1955 in New York City, New York.

Marilyn admires the outside of the Elizabeth Arden salon in New York City, March 25, 1955.

Marilyn Monroe reacts to her costume fitting backstage while getting ready to attend a benefit performance of Ringling Brothers and Barnum & Bailey Circus at Madison Square Garden, New York, March 31, 1955. Marilyn seems distraught over her costume design.

Actress Marilyn Monroe takes the subway in Grand Central Station, March 24, 1955 in New York City.

Marilyn Monroe touches her eye at Costello's restaurant, New York, March 1955.

Marilyn Monroe relaxes as she reads the Motion Picture Daily Newspaper in her room at the Ambassador hotel where she stayed during her visit to New York City, March 24, 1955.