Melania Trump wore a gray $5,500 Dior blazer to Donald Trump's address to Congress

• President Donald Trump addressed a joint session of Congress on Tuesday.
• Melania Trump attended the speech wearing a Dior blazer with a removable scarf and matching skirt.
• A style strategist and image coach said her look embodies "quiet authority."

First lady Melania Trump attended President Donald Trump's address to a joint session of Congress in a gray skirt suit by Dior.

The wool tweed blazer, which features a removable scarf detail, retails for $5,500 on Dior's website. She paired the blazer with a matching skirt and accessorized with a black belt.

"First Lady Melania's style tonight is quiet authority — polished, self-assured, and entirely in command of her presence," Lauren A. Rothman, a style strategist and image coach, told Business Insider.

The White House did not immediately respond to a request for comment.