And, according to reports, the feisty Celebrity Big Brother winner gave a typically outspoken speech referencing Kieran's infidelity.
The Sunday People claims that Katie "stunned guests with her defiant speech".
Last May, a pregnant Katie announced she was divorcing Kieran after discovering he'd been cheating on her with two of her best friends.
And, despite deciding to take him back, fans watching CBB would have seen Katie clearly still livid at the betrayal.
So it's perhaps no surprise that Katie, 36, choose to lay down the law during their vow renewal ceremony in West Sussex.
According to reports, the pair, who have two young children together, renewed their vows at Long Furlong Barn near Worthing at 5pm on Saturday (21 February) and her daughters Princess, seven, and Bunny, five months, were bridesmaids.
Guests included CBB housemates Cami Li and Keith Chegwin, Michelle Heaton and Dean Gaffney.
Former TOWIE star Lauren Goodger tweeted her apologies for not being present, saying: "So sorry I'm missing @MissKatiePrice n Kieron's vows today Gutted not going CU both!It's going be beautiful..Enjoy your day catch up soon."
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