Melania Trump's first outing in the Sicilian sunshine was in a colourful floral applique jacket by Dolce & Gabbana that sells for $51,000, just a few thousand dollars below the median US income in 2016.

She also carried a matching clutch to lunch with spouses of the G-7 leaders, held at the historic Elephants Palace and hosted by Catania's mayor.

The burst of colour in the US first lady's wardrobe came after a steady dose of mostly black during President Donald Trump's inaugural overseas tour, including a prim black lace dress with a matching mantilla headcover that she wore to meet Pope Francis, and a dark jacket with golden detailing on the cuff and collar that she wore for her arrival in Italy. Both outfits were also by Milan designers Domenico Dolce and Stefano Gabbana.

Gabbana has celebrated each appearance with Instagram posts. He shared three photos of the floral jacket, worn over a simple white shift dress, with Ms Trump looking model-perfect as she stepped out of an SUV. Gabbana tagged the photo with hearts and a "Thank You" to @flotus #melaniatrump.

Dolce & Gabbana have made Sicily their fashion muse, so it made sense that Mr Trump's wife would wear their designs in Sicily, the final stop on Trump's trip.

The White House did not respond to requests for comment on how much Ms Trump, a former model and the wife of an independently wealthy president, paid for the jacket. The US government does provide first ladies with a wardrobe allowance.

Several fashion designers have said publicly that they will not dress the first lady because they oppose her husband's policies.

The retail price for the Dolce & Gabbana jacket comes in at about $5,500 below the median US household income of $56,516 in 2015, the most recent year for which figures are available from the US Census Bureau.

As the Trumps travelled through Saudia Arabia, Israel, Italy, Brussels and then back to Italy, the President left it to top aides in Washington to explain the details of his federal budget proposal for 2018. Mr Trump has proposed a $4.1 trillion spending plan that slashes safety net programmes for the poor, including food stamps and Medicaid, while spending billions more on the military and protecting retirement programmes for the elderly.

The fashion choices of America's first ladies are a longstanding source of public fascination, and Ms Trump is getting a taste of that on the trip, her first extended period in the public eye since her husband took office in January. She lives mostly at their penthouse at Trump Tower in New York with their 11-year-old son. The President has said they will move to the White House after the school year ends.

First ladies are almost always criticised or praised for whatever they wear.

(Getty Images)