A few dozen handwritten letters by Jackie Kennedy Onassis — as well as photographs of the former first lady — raised $28,000 at a Florida auction on Jan. 17.

Among the rare items up for bid was a collection of personal correspondence by Jackie to interior designer Richard Keith Langham, and also Bill Hamilton, the then-designer at Caroline Herrera, in which the fashion icon detailed exactly how she wanted her jackets and pants to be tailored.

She kept in touch with them about fashion and furnishings from the mid-1980s until her death in 1994.

jackie kennedy onassis

Jackie with husband Aristotle Onassis in France in 1970.

“This is the first time to our knowledge that these have been seen publicly,” says Rico Baca, auctioneer and co-owner of Palm Beach Modern Auctions.

Related Story: Jackie Kennedy Onassis — See 10 of Her Most Iconic Fashion Moments from the ‘Jackie O’ Years

“The letters tell us that Jackie, who was highly educated and passionate about fashion and art in all forms, took a very personal interest in the design and construction of her own clothing,” he added.

To read the full story on Jackie, pick up the new issue of ‘Closer Weekly,’ on newsstands now!