Happiness multiplied in the home of Stephanie Demner and Guido Pella. On Monday, November 2, Jazmín, the couple’s second daughter, was born, and Arianna, at 4 years old, began one of the most special roles of her life: that of big sister. Since then, the influencer has been sharing some of the sweetest moments of this new family phase. And now, settled at home, she surprised with a series of photos that blend love, closeness, and a lot of fashion.
“My little girls and their first matchy matchy ✨🐣🎀”, wrote Stephanie alongside the images of the two girls dressed in coordinated outfits.
And the photos could not be sweeter: Ari holds her little sister in her arms, gazes at her with tenderness, cuddles up beside her and treats her to smiles while Jazmín, barely a few days old, begins to star in their first family snapshots.

Because if there is one thing that becomes clear, it is that Ari, who already has camera experience thanks to her mother’s posts, now has a little style partner.
This is what Arianna and Jazmín’s matchy matchy looks look like
For their first combined photo session, the sisters wore white dresses with delicate horizontal stripes in pale blue and blue-gray, a fresh, classic choice perfect for spring.
Arianna wore a short dress with a marine-inspired style, featuring short sleeves, a white shirt collar, and a fine-stripe design that lends her a delicate and relaxed air. The silhouette is comfortable, ideal for a girl her age, and it carries that timeless classic look of children’s fashion that never goes out of style.

Meanwhile, the little Jazmín wore a baby’s romper made from a fabric with a soft-looking texture, featuring the same stripe pattern and an identical color palette to her sister’s dress. The design has short sleeves, a white collar, buttons at the front, and a slightly gathered finish that gives her a very delicate silhouette.
The most enchanting detail is that, although the garments are adapted to each one’s age, they share the same colors, the same print, and the sailor-inspired vibe.
They aren’t two exactly identical outfits, but two versions of the same look, designed so that each sister retains the comfort inherent to her age. The result is a coordinated, fresh, and utterly tender style.

What is matchy matchy, the trend that is also taking over children’s fashion
The term matchy matchy is used in fashion to describe looks in which two or more people wear garments that coordinate with one another. They can be identical sets or simply designs that share colors, prints, textures, or a special detail.
Although this trend is also seen among couples, friends, and mothers and daughters, dressing siblings in coordinated outfits has a particular charm. It’s a fun way to create family looks and to play with fashion without everyone having to wear exactly the same thing.

In the case of Arianna and Jazmín, Stephanie chose a particularly delicate version: garments with the same print, but with designs different according to age.
And there is one of the keys to make matchy matchy work: maintaining a shared aesthetic without losing the individuality or comfort of each child.
Why we love dressing siblings in matching outfits
There is something especially tender about seeing two siblings in coordinated outfits. It is a habit many families choose for special occasions, birthdays, vacations, celebrations, or simply to document everyday moments.
Moreover, matchy matchy looks have several advantages: they allow you to create harmonious combinations, work very well in family photos, and can be adapted to different ages. You don’t need to buy identical outfits. Sometimes it’s enough to choose the same color palette, a shared print, or small details that connect both outfits.
Stripes, plaids, small florals, and pastel tones are some of the loveliest options for these kinds of combinations.
And there is something that goes beyond fashion: those photos that today seem like a bit of family fun can, with the passing of years, become endearing memories of childhood.
Arianna and Jazmín, a new duo that promises many shared looks
Stephy has always shared with her followers her passion for fashion and the various moments of Arianna’s life, who became a little star of her social networks. Now, with Jazmín’s arrival, a new family chapter begins.

In these first images, beyond the combined garments, what stands out is the growing complicity being built between the sisters. Ari holds her, caresses her, and settles beside her with a smile that says much more than any words.
And while Jazmín is just beginning to discover the world, she already had her first coordinated look with her older sister.
A first matchy matchy that not only marks the beginning of a new fashion-forward duo, but also one of the sweetest memories of this new family phase.