The reality star headed for lunch with his future wife, before taking a trip to the cinema and while waiting for their food to arrive, Kirk couldn't reist grabbing a quick selfie with Holly.
Alongside his photo, he gushed: "Nice bit of lunch with my amazing wife to be @xhollixwillisx."
In his snap, Kirk can be seen beaming from ear to ear, while Holly flashes a smile in the background.
Despite gushing about his fiancée quite openly now, Kirk first chose to keep his engagement fairly quiet. News he is set to wed only came to light when the 27-year-old casually slipped the word fiancée into one of his tweets.
Shunning a big announcement, Kirk gave the game away on his engagement by tweeting: "Can't wait to be a judge @PudAid 2moz with my beautiful fiancée and our little Scarlett."
Scarlett is Holly's daughter from a previous relationship.
Kirk and Holly first dated seven years ago, but decided to rekindle their romance earlier this year, after bumping into each other on a night out.
Explaining how the pair reunited, Kirk recently revealed: "[Holly] was sat at the table next to me! We've been inseparable from that moment on. It feels like fate – we're very much in love and I'm off the market for the rest of my life."
As well as a wedding to plan, the couple have a second reason to celebrate. Kirk and Holly are also expecting their first child together.
The Essex boy first announced his exciting news on Twitter last month by sharing a photo of their baby's scan. He tweeted alongside his photo: "Everyone meet mine and Holli's little girl!!! Proudest moment of my life so far!"
Since then, Kirk has been inundated with congratulatory messages and when Reveal caught up with his former TOWIE co-star Gemma Collins, she told us she was "delighted" for him.
"I'm delighted that Kirk is having a baby," Gemma said. "I think he's always loved kids. When I've spoken to him before, he said how much he loves kids."
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