The entrepreneur and former model was spotted smiling for photographers at the first day of the Cheltenham festival, rocking a fur gilet and matching furry boots.
The couple walked hand in hand at what was no doubt a dream day out for horse-lover Katie.
Those with a keen eye might also have spotted Katie's unique phone cover, which features a photo from the couple's wedding day.
Katie married the former plasterer (and occasional stripper) at a Sandals resort in the Caribbean last year with just six guests in attendance, having ended her previous engagement to model Leandro Penna months earlier.
Katie and Kieran in the stands at Cheltenham
She gave birth to the couple's first child, Jett Riviera last September.