The couple – who placed second this year – stopped on the red carpet to kiss for the cameras on Thursday night (14 July), showing they're as smitten as always.
Olivia looked incredible in her figure-hugging pale blue bandage skirt and a risqué white top, teamed with a blush duster jacket and sky-high heels.
Alex, meanwhile, was looking as handsome as always!
Ah! We miss them on our screens!
Alex and Olivia's romance was made official in the Love Island finale, right after the islanders all made beautiful speeches to each other about the experience.
In a moment that made us all melt, Alex summed up his feelings by telling Olivia: "I'm all yours and you're mine."
"I came into Love Island with no expectations. I came here to have a good time and enjoy the opportunity to the fullest," added Alex. "I've realised now that I've done exactly that and it's all down to this one girl. We have this crazy connection and I can't even begin to describe it. When we get out, it's going to be our time. I've never felt like this before."
Olivia was equally effusive, describing Alex as her "prince" and saying: "Alex, in short, you have allowed me to learn to trust again. You've been the perfect gentleman and have been so patient with me and my many meltdowns. We've had more tests than I ever thought I could handle, but I've always had faith in us both as a team.
"My feelings for you get clearer and louder every day we spend together and I cannot think of a better way to finish the Love Island journey than to be on your arm. We'll smash this final together and then start smashing a blinder of a future together, stronger than ever."
The Love Island 2016 cast reunited in London for the wrap party last night, marking the first time many had seen each other since leaving the villa.
It was Cara de la Hoyde and Nathan Massey who won this year's show, securing the public vote and sharing the £50,000 prize.