The Loose Women panellist, 37, made her hubby a special wedding present and shared it with her combined three million Twitter and Instagram followers.
The video montage of their life together was accompanied by Katie singing the words to Vanessa William's 1994 hit 'Save The Best For Last'.
Of course it didn't go unnoticed that the lyrics include the line: "How could you give your love to someone else?"
As well as the video, she wrote the message: "Happy Anniversary Kieran. To see the whole video make sure you check out my app "Katie Price Official" on iTunes and google play xx #exclusive #love #family."
Mum-of-five Katie also enjoyed a night out with Kieran, 28, and friends to mark the special occasion.
Fans reacted to the video with floods of messages, with one saying: "Regardless what anybody else is thinking or saying, I am just wishing you and ur Kieran a happy anniversary @officialkatieprice. Life is all about choices. U clearly made yours. Bless that! Have a great day sweetheart."
Another said: "It takes a stronger heart to forgive than walk away. And it's easy for people to say she's stupid for forgiving him when they don't have to deal with the emotion of letting somebody go you love and have children with . Katie's no different than anybody else just a woman in love forgiving her man . All marriages are difficult so good luck katie and happy anniversary to you both."
One less generous fan said: "This is hilarious!!! Will you be celebrating the anniversary of finding out he was banging your best friend??"
Katie and Kieran have been married for three years and have two children together. In early 2013, just weeks after their wedding, she discovered he had been cheating with her best friend.
But she forgave him and the pair are still going strong. In fact, they are planning more children!
For exclusive competitions and amazing prizes visit Reveal's Facebook page NOW!