George Clooney, Damian Lewis were among guests at a star-studded White House dinner in honour of David and Samantha Cameron.
Guests of Barack and Michelle Obama also included US Vogue editor Anna Wintour, The Wire's Idris Elba, Downton Abbey's Elizabeth McGovern and movie mogul Harvey Weinstein.
English folk-rock band Mumford & Sons – a favourite of the Prime Minister – and US R&B star John Legend provided entertainment at the glitzy gala.
Produce from the presidential mansion's own garden was used in the "winter harvest"-themed meal.
The hostess and the PM's wife had pulled out all the stops on the style front – Samantha in a blue Alessandra Rich gown with lace detail and Michelle in Marchesa.
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