Pieces worn by Carolyn Bessette-Kennedy included in Sothebys Fashion Icons sale.

A faux leopard fur coat, circa 1969, she owned is also up for sale.

Another piece with pop culture resonance is Issey Miyakes molded bustier from 1980, which Grace Jones often wore.

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Versace, spring 2003 ready-to-wear

I dont believe the market for collectable fashion has been affected by the election or other events.

The changes we see in the collectable fashion market are broader and emerge over a longer period of time.

It is not as reactionary as the contemporary fashion industry is.

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Christian Dior, fall 2000 ready-to-wear

What trends have you observed in fashion collecting of late?

As time marches on, so does collectors interest and the demand for certain periods in time.

At present, we are seeing a huge surge in interest in the 1990s and 2000s.

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Bessette-Kennedy and John F Kennedy, Jr. at the Municipal Art Society’s Jacqueline Kennedy Onassis Medal Awards gala, March 1997.

How are rarity and provenance balancing out at the moment?

Rarityandprovenanceare the magic words at auction and as a fashion specialist, what I seek in a garment.

Provenance is the X-factor that can provide an item with a remarkable and hard-to-predict surge in value at auction.

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Bessette-Kennedy, January 1997.

What is the rarest piece in the sale, in your opinion?

Can you speak to the cult of CBK?

Carolyn Bessette-Kennedy remains the definitive style icon of the 90s.

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A look from the the fall 1997 Christian Dior couture collection.

She understood the power of dressing well in your everyday life.

She knew how to dress for any occasion, but she ultimately dressed for herself.

She was entirely authentic, and it is this authenticity which is at the heart of her eternal allure.

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A look from the fall 1994 Versace ready-to-wear collection.

Is there anything else youd likeVoguereaders to know about the sale?

This sale is a fashion enthusiasts dream, showcasing the most influential figures, designers, and cultural moments.

Worn by Carolyn Bessette-Kennedy, a single-breasted black double-faced wool Prada coat, 1997; est.

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Chanel, fall 1983 couture.

$15,00020,000

Bessette-Kennedy, January 1997.

Necklace from the spring 1997 Christian Dior couture collection; est.

$10,00015,000

A look from the the fall 1997 Christian Dior couture collection.

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Issey Miyake, fall 1980 ready-to-wear.

Versace dress, fall 1994; est.

$3,0005,000

A look from the fall 1994 Versace ready-to-wear collection.

Karl Kani newspaper-print denim ensemble, circa 1989 ; est.

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Grace Jones in Issey Miyake, 1981.

$2,0003,000

Vintage Bob Mackie beaded gown with mink trim; est.

$2,0003,000

From Karl Lagerfelds debut collection, fall 1983 Chanel couture evening ensemble; est.

$30,00050,000

Chanel, fall 1983 couture.

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A Sonia Delaunay cloche and matching scarf, 1924-25, est. $18,000–24,000

John Galliano frock-coat, spring 1985; est.

$20,00030,000

An Issey Miyake breastplate, fall 1980; est.

$26,00035,000

Issey Miyake, fall 1980 ready-to-wear.

Grace Jones in Issey Miyake, 1981.

Worn by Carolyn Bessette-Kennedy, a vintage double-breasted faux-leopard fur coat, c, 1969; est.

$20,00030,000

An un-labelled Chanel couture dress, c.1927, est.

$10,00015,000

A Sonia Delaunay cloche and matching scarf, 1924-25, est.

$18,00024,000

Liberty of London cape, 1920s, est.