Buying presents for people you don't know that well is tricky, but the PM's wife passed with flying colours
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For the first daughters, there were wellies in bright colours - one of the main trends for last winter
The British leader took the gifts with him for his meeting in the White House
Samantha Cameron more than made up for her absence when her husband visited Washington this week.
Unable to make the long haul trip because of her pregnancy, the Prime Minister's wife had picked out some beautiful gifts for him to take to his hosts, the Obamas.
Their daughters received, what are surely a tween dream - trendy Hunter wellies: in pink for Malia, twelve, and purple for nine–year-old Sasha.
For the first couple themselves, Samantha - a former art student, who works as a creative consultant for luxury leather goods brand Smythson - chose a painting by one of her favourite artists.
The £2,500 work by graffiti sensation Eine, a reformed hoodie, bears the slogan: "Twenty First Century City".
Now 39, the artist recently spoke about his troubled past:. "I started out in the world of graffiti when I was about 14 because I wanted to be part of that hooded tracksuit gang thing," he explained.
He continued that it had been a "weird day" because "David Cameron has given one of my paintings to President Obama in an art swap"
David takes home to Downing Street a lithograph by pop artist Ed Ruscha.
For his and Sam's eldest Nancy, six, there was a silver charm necklace, while her brother Elwen, four, got a DC United football kit.
And, in a very thoughtful gesture, First Lady Michelle had included a gift basket including a baby blanket for her expectant counterpart.
During his meeting with Barack, the British leader passed on a message from the Queen inviting them on a state visit.
In response, a National Security Council spokesman said: "The President and First Lady are delighted with the Queen's invitation for a State visit to the United Kingdom and are very much looking forward to it".
Last time round, Michelle famously got on so well with the monarch that she broke with protocol giving her a warm hug and was invited back for an unofficial visit a few months later.