Victoria, 44, attended Prince Harry and Meghan Markle’s nuptials at St George’s Chapel, in the grounds of Windsor Castle in May with her husband David Beckham.
Two months on, the fashion designer has spoken about the big day and her choice of outfit.
In the clip posted to her 21.5 million followers, she said to the camera: “So I went to a little wedding a few months ago…
She continued: “What do you wear to a royal wedding?”
What do you wear to a royal wedding?
Showing off her stunning navy frock from the nuptials, Victoria explained her decision behind the garment’s design.
She spilled: “So I knew that I wanted something that was appropriate, something that was feminine, something that I felt comfortable in, but I always wanted it to have a little bit of edge.
“So I designed this dress that has this really beautiful D-ring neck detail because I love the toughness.
“That’s very slimming - that is always key,” she added.
Victoria then went onto describing the small details of the dress which made her stand out of the crowd.
Victoria Beckham Instagram: The star revealed details on the royal wedding (Image: INSTAGRAM)