She made the reveal after posting a video on Instagram marking her most significant moments of 2018.
Amid the many clips celebrating the singer's musical prowess are also a selection of intimate family moments, including the day Beyoncé and Jay-Z renewed their wedding vows to one another in June.
Beyoncé wore a Victorian-inspired Galia Lahav 'Thelma' couture gown for the occasion, designed with sheer blouson silk sleeves, ornate vintage embellishments and an off-shoulder neckline.
The Israeli designer shared a screenshot from Beyoncé's video on her official Instagram page, showing the singer posing alongside her husband, who was wearing a matching white suit.
"The Queen B herself @beyonce wore the Thelma Gown for her and husband, Jay-Z's vow renewal back in June, but this is the first official image to surface from that remarkable day - and we're in love all over again!" the caption reads.
The celebrity couple first revealed that they’d renewed their vows in June 2018 when they kicked off their highly-anticipated On the Run II tour in Cardiff.
During a performance of “Forever Young”, personal family video footage showed Beyoncé and Jay-Z at the ceremony with their six-year-old daughter Blue Ivy and their one-year-old twins Rumi and Sir.
However, this is the first time Beyoncé has shared a glimpse of her entire ensemble from head to toe.
Lahav previously expressed her gratitude over Beyoncé's choice to wear the dress in a statement published on the designer's website.
"This is a dream come true to be able to dress Miss Beyoncé herself on such a major event in her life," the statement reads.
"A moment so special we wanted to share it with you all!"
For her wedding to Jay-Z in 2008, Beyoncé wore a wedding dress designed by her mother Tina Lawson.
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