Just days after sealing her new romance with a kiss at a trendy ski resort in Switzerland, Pippa Middleton and her new flame, Nico Jackson, was spotted gazing into the window of a high-end jewellery store in the town centre.

The 29-year-old socialite and the 35-year-old stockbroker took a romantic stroll in St. Moritz, with arms tightly wrapped around each other and looking very much in love. The couple even wore somewhat matching outfits, both geared up for the wintery weather in beige and nude coats, with Pippa wearing an additional beanie and fur gloves.

The loved-up pair was later joined by a group of friends as they went for lunch, with the two making a brief pause to look in the window of jewellery store Cartier.

So is it the turn of the royal sister to get hitched?

The couple's blossoming romance seemed to be heading into a serious direction since they started dating earlier this year. Just last week, Pippa made her relationship with Jackson public during a ski marathon as she planted a kiss on the lips of her new beau after finishing the race, despite the curious crowd and eager photographers around.

Also, things might be really serious as Jackson has already met the almost royal family. In February, he joined Pippa in Mustique, where they spent a holiday with her sister Kate and brother-in-law Prince William, as well as her parents Carole and Michael and brother James.

Meanwhile, Jackson's family has also met the beautiful party planner and expressed their support for the two.

"Yes, we have met [Pippa] and I have to say she is absolutely charming, but I really cannot say any more. We're all just very pleased," Jackson's mum revealed.

There would be a lot of broken hearts out there, but let's hope the royal sister would finally find her own William soon.