Royal announcements usually arrive with a little ceremony. There may be a palace statement, a formal portrait, or a carefully composed photograph released at precisely the right moment.
Princess Alexandra of Hanover had a different idea.
On September 11, the 27-year-old shared her engagement news on Instagram with a series of relaxed photographs, a glimpse of her fiancé, her beloved dachshund Eloise, and one very hard-to-miss ring. Her caption was short, playful and almost suspiciously casual for a royal announcement: “The marriage plot,” followed by a string of yellow heart emojis.
And just like that, Grace Kelly’s granddaughter entered her engaged era.
The bride-to-be is set to marry longtime boyfriend Ben-Sylvester Strautmann, also 27, after around a decade together. While the couple has spent years moving within Monaco’s royal and social circles, their engagement announcement felt less like a formal royal bulletin and more like a particularly chic relationship hard launch.
For couples planning their own celebrations, the moment also offers a useful reminder: a wedding announcement does not need to look overly rehearsed to feel special. Sometimes, a few photographs, a personal caption and a ring that tells its own story are enough.
Alexandra is the daughter of Princess Caroline of Monaco and Prince Ernst August of Hanover, making her one of Grace Kelly’s 11 grandchildren. She is also 13th in line to the Monegasque throne, with her uncle Prince Albert serving as Monaco’s sovereign. Her title comes through her father’s family, which traces its lineage to King George III of Great Britain and Ireland.
Despite her royal background, Alexandra has often maintained a relatively low-profile public presence. Born in Austria and raised in Monaco, she competed as a junior figure skater and represented the principality at the 2015 European Youth Olympics. She has also appeared regularly at major Monegasque events, including the Monaco Grand Prix and the Rose Ball.
Her engagement post reflected that blend of tradition and ease. There was no need for a grand announcement when a few candid-looking images could communicate the mood just as effectively. The photographs showed Alexandra and Strautmann together, with the ring making several appearances throughout the carousel.
The caption, meanwhile, was very much in the spirit of a modern social media reveal. “The marriage plot” is less formal royal proclamation and more knowing wink, which feels fitting for a princess whose public image has long intersected with fashion, travel and contemporary European society.
Strautmann, who was born in Germany and moved to Monaco as a child, has been linked to Alexandra since 2016. The couple confirmed their relationship publicly in 2017, and they have since appeared together at events connected to Monaco’s royal family.
Their relationship has largely unfolded away from the more theatrical side of royal romance. There have been public appearances and event photographs, but the couple has not built their relationship around constant public updates.
That makes the engagement feel like a natural next chapter rather than a sudden plot twist. The pair have been together for roughly ten years, meaning the announcement is less about a whirlwind romance and more about a long relationship finally reaching its next milestone.
It also gives the engagement a distinctly personal quality. Alexandra’s post was not overloaded with details, and the couple has not yet announced a wedding date or location. For now, the focus is on the engagement itself, and of course, the ring.
The engagement ring was reportedly chosen by Strautmann and designed by Italian jewelry house Antinori di Sanpietro. At its centre is a 4.8-carat natural Fancy Yellow diamond in a cushion cut, flanked by two trillion-cut diamonds. The design combines yellow and white gold, creating a warm, graphic contrast around the central stone. The ring has been valued at approximately $203,000.
It is an unexpected choice for anyone expecting the usual colourless diamond. Yellow diamonds have a warmer, more expressive presence, and Alexandra’s ring feels particularly suited to the way she announced her engagement. It is glamorous, but not overly traditional. Distinctive, but not trying too hard.
The cushion-cut centre stone gives the ring a soft, almost vintage shape, while the trillion-cut side diamonds introduce sharper architectural lines. That contrast keeps the design from feeling too sweet or predictable.
According to further reporting on the ring, the stone was the starting point for the design, with the setting created around Alexandra’s individual style. Some reports have also pointed to hidden details beneath the setting, including references connected to Rome and the couple’s relationship with the city.
That is the detail that makes the ring feel more meaningful than a simple statement piece. The most interesting engagement rings are not always the largest or most expensive. They are the ones that contain a private reference, a particular colour, or a design decision that feels connected to the person wearing them.
Alexandra’s engagement ring also reflects a broader shift in bridal jewellery. While classic diamond solitaires remain popular, couples are increasingly drawn to coloured stones, unusual cuts, mixed metals and designs that feel less like a standard engagement ring template.
The yellow diamond gives the piece an immediate identity. It photographs beautifully, but it also feels less expected than a traditional white diamond. The combination of yellow and white gold adds another layer of interest, while the trillion-cut diamonds give the ring a more contemporary finish.
In other words, it is not simply a royal ring. It is a ring with a point of view.
That is perhaps the most appealing part of Alexandra’s engagement announcement. The romance is there, but it is not presented as a perfectly polished fairytale. There is a relaxed Instagram caption, a glimpse of the couple’s everyday life and a ring that feels considered without looking overly formal.
Alexandra’s engagement means another royal wedding may be on the horizon for Monaco’s Princely Family. However, the couple has not yet shared details about their ceremony, including when or where it will take place.
For now, there is plenty to speculate about stylistically. Alexandra’s family history places her within one of Europe’s most recognisable royal circles, while her own public appearances suggest a more modern fashion sensibility. Her wedding could easily bring together old-world Monaco glamour with a more relaxed, fashion-conscious approach.
But before the dress, venue and guest list take over the conversation, the engagement ring has already made its mark.
With its Fancy Yellow diamond, sculptural side stones and personal design details, it feels like a fitting introduction to Alexandra’s next chapter. Traditional enough to belong in a royal jewellery collection, but individual enough to look completely at home on her Instagram feed.
And honestly, that may be the most modern royal move of all.
An engagement ring can be a reflection of your relationship, whether that means a classic diamond, a coloured gemstone or a custom design filled with personal details.
Wedded Concierge helps you find trusted jewellers, proposal planners and wedding experts matched to your vision, destination and personal style. Whether you are searching for a one-of-a-kind ring or planning the moment you will ask the big question, the right support can help bring every detail together.
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