They have travelled to no less than three European countries in the space of a week.
The pair first travelled to the NATO conference in Brussels, Belgium.
They were pictured with French President Emmanuel Macron, 40, and his wife Brigitte Macron, 65.
Melania and Donald went on to make a working visit to the UK.
They met Queen Elizabeth II, 92, at Windsor Castle, and Prime Minster Theresa May, 61, at Chequers.
Their final stop was in Finland, where a summit was held between Donald and Vladimir Putin, 65, the President of Russia.
The pair touched down in the US yesterday, returning to the White House in Washington DC.
Melania wasted no time in marking the trip, posting video footage on her Instagram account, which has 1.8 million followers.
The footage shows Melania standing next to Brigitte Macron and the Belgian Prime Minister’s wife, Amelie Derbaudrenghien.
Later on, it features Melania descending the stairs of a plane beside Trump at Stansted Airport.
The video also includes the couple’s meetings with Theresa May and with the Queen.
She captioned the video: “Belgium, UK, Finland. Thank you for your warm hospitality!”
Yesterday, Melania Trump wore tight jeans as she arrived back at the White House.
The First Lady looked casual, yet still chic, in a crisp, oversized white blouse.
The blouse was demurely buttoned almost up to the top, with the large sleeves rolled up.
Adding an even more casual air to the outfit, she tucked the crisp white shirt with a simple pair of dark blue jeans.
The jeans clung tightly to her slender legs, sitting on her hips with a little bit of give around the ankles.
In an unusual move for the 48-year-old, who is more often than not spotted in six-inch stiletto heels, she wore a pair of flat shoes.
The black ballet pumps had a slight shine to them, and were perfect for the First Lady following a long flight home.