Well, the answer is no!
The mother-of-five had a pretty simple reason for donning a sparkling white frock on today's Loose Women: the panel were discussing their wedding days and recalling old memories.
When she learned about the topic, Katie phoned a wedding dress shop in London and had them deliver a dress for her to wear. Oh Katie, always going the extra mile!
"I live and breathe weddings," she said, "I should become the wedding planner! I love weddings and the big dresses, although obviously I do it because I love the person."
Though she did add: "Forget the middle one… that as the rebound one."
That was a dig at second husband Alex Reid whom she married in Las Vegas in 2010 but divorced the following year. Her first husband was Peter Andre, while she's now married to third hubby Kieran Hayler.
"Pete was real love, the second one was a rebound – rubbish – then Kieran, my Prince Charming. I loved every minute of that wedding."
Katie was pregnant with the couple's first child together, son Jett, when they married in the Bahamas in January 2013 after a whirlwind romance. They've since had a second child, daughter Bunny.
The 37-year-old is also mum to son Harvey, 13, from her relationship with Dwight Yorke, and kids Junior, ten, and Princess, eight, from her marriage to Pete.
Katie did share one tip for a successful wedding: timing! "I've found weddings, it's the tables [that are he hardest to do]. Because I care about people and I don't want to hurt people's feelings by putting them at the back table or only inviting them t o the evening, they don't be as special. So I try to get married in the late afternoon and everyone can join in – and it's cheaper that way as you don't have to do the lunch!"
Meanwhile, we spotted Katie wearing a wedding dress in Manchester last week. The exclusive pictures are in the brand new issue of Reveal magazine, out now, along with the reason...