Meghan Markle wore a $4,700 Armani dress for her interview with Oprah

• Meghan Markle wore a silk $4,700 Armani dress for her sit-down with Oprah.
• The duchess wore a necklace by Pippa Small, a brand that is known for its links to Prince Charles.
• The interview will air on CBS on March 7.

The Duchess of Sussex wore a $4,700 monochrome dress in the first trailer for her sit-down interview with Oprah.

The silk Armani gown, which is belted and features white florals and a V-neck design, is now sold out online. The duchess styled her hair in a sleek updo and wore dramatic makeup for the TV special, which will air on CBS on March 7.

Meghan Markle paired the dress with a Cartier "Love" bangle, Birks earrings, and a Pippa Small necklace, Hello! Magazine reports.

The necklace may have been a nod to Markle's father-in-law, Prince Charles. The designer has collaborated with his Afghanistan-based charitable foundation, Turquoise Mountain, to support and train local artists, since 2008.

The interview, which will feature a sit-down with Markle and Oprah before they are later joined by Prince Harry, has been extended from 90 minutes to a two-hour special.

The trailer, which was released on February 28, shows Oprah asking the royal: "Were you silent, or were you silenced?"

"I just wanna make it clear to everybody, there is no subject that is off-limits," the TV host adds.

"My biggest concern was history repeating itself," Harry says in another clip shown in the trailer, which is thought to be a reference to his mother, the late Princess Diana.

Watch the trailer in full below:

—Omid Scobie (@scobie) March 1, 2021