Kate Middleton and Prince William pack on the PDA at Princess Eugenie's wedding

Sweet.

Earlier this week, Prince William and Kate Middleton's unexpected PDA garnered attention from fans. There's an important reason why they never hold hands in public, unlike Prince Harry and Meghan Markle.

But the latter couple's publicly affectionate ways may be rubbing off on the Duke and Duchess of Cambridge, as the pair were spotted looking very sweet together at Princess Eugenie's wedding.

While the guests were waiting for the princess to arrive for her big day, the cameras panned around St George's chapel, allowing fans to see exactly what was happening inside.

We saw many celebrity faces - and their fierce outfits, too - eagerly waiting to get a glimpse of Princess Eugenie's wedding dress.

And, much to royal fans delight, the camera caught a very sweet moment between William and Kate.

As the guests got comfy, Kate was spotted with her hand placed softly on William's leg, as he held her hand and the camera stayed on the couple for a few moments.

Our hearts.

William and Kate are usually much more reserved in public, but this week they seem to be enjoying packing on the PDA.

Earlier this week, they attended the Global Ministerial Mental Health Summit in London, which is attended by political figures, academics, and policy-makers with the aim of improving services, legislation and awareness of mental health issues.

As the couple entered County Hall, William placed his hand on Kate’s back, a rare show of affection from the royal, and later on in the day they sat together on the Friendship Bench where William gently touched Kate’s leg.

We love seeing this new side to William and Kate!