Today, we celebrate the birthday of one of the most iconic figures in American (and fashion) history, Jackie Kennedy Onassis! The former first lady was born on July 28, 1929 in Southampton, New York and then went on to become first lady and much more. Known for her classic American style and ever-so-present chic hats and scarves, Jackie O has truly left her mark on fashion.

In fact, letters Jackie had written were recently auctioned in conjunction with the 50-year anniversary of the Kennedy Assassination. In them, Jackie writes to Marita O'Connor of Bergdorf Goodman containing requests for hats, accessories, and other garments, and many of the letters had sketches penned by Jackie herself.

Click through the gallery above to see one of the letters, and a few of our favorite Jackie O style moments. Then check out The Story of Jacqueline Kennedy Onassis by our friends at AOL