The curvy singer chose a figure-hugging nude sheath number from Posh's new spring/summer line – hailed by critics during New York Fashion Week – to wear for a trip to Washington with husband Marc Anthony.
There they had a private audience with politicians on Capitol Hill.
Jennifer and Marc were in town for a gathering of Hispanic leaders, where Marc was honoured in front of an audience that included President Obama and First Lady Michelle Obama.
And it was also the Latin singer's 41st birthday, an event that was reportedly marked by a rendition of 'Happy Birthday' sang for Marc by the American leader.
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