“I visited the pop-up boutique of @brides_do_good @bicesterVillage and was moved by their mission," said Fergie.
“Brides do Good is a social enterprise that sells designer wedding dresses and donates up to two thirds of the proceeds to projects that provide safe education for girls."
“Their vision is a world without child marriage #bicestervillage.”
Her post sparked speculation on whether she would remarry the Duke of York, who she remains close to following their 1996 divorce.
One follower said: “Thought you might be tying the knot again for a second.”
Another said: “Andrew will love seeing you walk towards him again in that dress.”
A third Instagram user said: “Wishing you and the Duke of York will remarry soon, you're such a great couple to watch, still very close after being divorce for decades.”
Another added: “Sarah get remarried to your Prince then you can buy a dress.”
In an interview with the Daily Mail, she called herself and Andrew “the happiest divorced couple in the world”.
She cryptically added: "We're divorced to each other, not from each other.”
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