Samantha, who is one of the charity's ambassadors, looked stunning in an exquisite floor-length jet black gown complete with long-sleeved lace bodice. She kept her hair loose and straight with the only accessories a pair of grey pearl earrings. A signature Sam Cam mix of high meets low maintenance style and beauty.
One talking point to consider though is the questios of the white bralet that is visible beneath said lace bodice. Part of the dress or a slightly risque sartorial addition from the usually safe and demure Mrs Cameron? We're hoping it's the latter.
Whatever would Dave say?
See more of Sam Cam's fashion prowess in our gallery.