Melania Trump
President Donald Trump and First Lady Melania Trump welcome Chinese President Xi Jinping and first lady Peng Liyuan at Mar-a-Lago estate in Palm Beach, Florida, April 6, 2017. Reuters/Carlos Barria

First lady Melania Trump wore a sleeveless red daisy-appliqué crepe midi dress by Valentino to greet Chinese President Xi Jinping and first lady Madame Peng Liyuan Thursday for a formal dinner at Mar-a-Lago. Earlier in the day, Melania arrived with her husband, President Donald Trump, at the Palm Beach, Florida resort, to welcome their Chinese counterparts.

On Thursday morning, Melania stepped down from the jet wearing a black and white polka-dot dress but had a change in the palette when she greeted the Chinese president and first lady for the formal dinner, which is part of a two-day summit. Melania chose to wear the color red as it is symbolic of good luck and celebration in China.

Melania stunned in the red Valentino dress, which, according to People magazine, is estimated to be worth $4,000.

Many speculate that Melania is working around fashion diplomacy by choosing the right kind of colors to wear during her public appearances.

Read: What Melania Trump Wore In Her First Official White House Portrait

On Wednesday, Melania wore an emerald green dress when she met with the royals of Jordan. The reason behind the first lady picking the color green could be because it is one of the colors on the Jordanian flag, and is an important hue in the Islamic faith. It is also seen as a deliberate reference to green’s symbolic associations in the Muslim world.

Before arriving at Mar-a-Lago Thursday, Melania appeared by Donald Trump's side during his speech about the Wounded Warrior Project Soldier Ride at the White House. The WWP has been hosted at the White House since 2008, when the practice was started by former President George W. Bush, and continued with former President Barack Obama.

“For over a decade, Wounded Warrior Project has worked with our nation's leaders to improve the lives of wounded veterans and connect them with services that will empower them to live their lives on their own terms,” WWP CEO Lt. Gen. (Ret.) Mike Linnington said in a press release Tuesday. “I am excited that the warriors we serve will have the chance to ride through our nation's capital and be hosted by the president at the White House. It's a tremendous honor, and we're incredibly grateful for the opportunity to continue this amazing tradition.”