Itachi Uchiha returned to Hogwarts after his visit to the Akatsuki. His entrance into the Grand Hall in his regular outfits during dinner surprised everyone, especially Luna Lovegood, his wife, and several other girls.

"I told Nagato that Voldemort's gone, and he is just waiting for you to send the money," Itachi spoke to Dumbledore with a calm yet authoritative tone, holding the entire room's attention.

"Thank you, Itachi, tell him it should be sent by tomorrow," replied Dumbledore, acknowledging Itachi's statement with a nod. The silence in the room after that was palpable.

"Oh my god, he was already hot, but those clothes," Lavender gushed from the sidelines, prompting a chorus of agreement from other girls.

"Itachi, what kind of jeans are those?" Ginny asked, trying to hide her curiosity with casualness. Itachi looked at her and simply replied, "They're skinny jeans."

Fleur, unable to resist the charm, complimented Itachi, "You look very dashing," making him smile politely and thanked her.

Hermione, always the inquisitive one, asked, "Is that what you usually wear?" to which Itachi replied, "Yes, during my outings."

The youngest of the Delacour sisters, Gabrielle, blushed as she said, "You look very handsome!" Itachi, managing to stay unfazed, simply nodded in response.

The next day, Itachi found the girls trying on similar outfits, hoping to match his style. Ginny even went as far as to try on skinny jeans.

Luna, however, wore her usual outfit; her love for Itachi was for who he was, not what he wore. She smiled at him, assuring him she liked him just the way he was.

Itachi, on the other hand, found all of this amusing. He never thought his casual attire would become a fashion trend at Hogwarts.

Hermione, who usually cared less about fashion, surprised everyone when she ditched her robes for a pair of skinny jeans. Her friends were astounded.

Even some of the teachers started to notice the latest fashion trend. Prof. McGonagall couldn't help but comment on it, amused by the whole situation.

Despite his new-found fashion influence, Itachi remained unfazed. He continued to wear his casual outfits, not bothered by the attention they attracted.

One day, Luna asked Itachi why he chose to dress differently. Itachi explained that comfort was his priority, and his outfit was convenient for his active lifestyle.

Fleur and Gabrielle, however, were more drawn to Itachi's style. The two sisters incorporated some of his elements into their own wardrobe.

They even went as far as calling it 'The Itachi Style.' It became a topic of much discussion among the students and even some of the staff.

Lavender and Parvati Patil even asked Itachi for fashion advice. Itachi just told them to wear what they felt comfortable in.

Meanwhile, Hermione decided to stick with her usual style, stating, "While Itachi's style is cool, it's just not me."

Luna couldn't help but laugh at the whole situation. While she found Itachi's style attractive, she couldn't imagine herself in skinny jeans and a hoodie.

Itachi's fashion trend reached even the quidditch teams. Oliver Wood, the Gryffindor Quidditch captain, once tried to incorporate a hoodie into his quidditch uniform.

Dumbledore chuckled at the sight, remarking, "Well, that's certainly a first!" The entire hall erupted into laughter. Itachi just shook his head, amused.

However, through all the amusement and laughter, Itachi's style made an impact. His clothes had become an expression of individuality and comfort.

Luna continued to support Itachi throughout, reminding him that his comfort and convenience mattered the most, no matter what others said.

As the excitement around 'The Itachi Style' started fading, everyone realized the true essence behind his fashion: Comfort over style.

Itachi's unpretentious and practical fashion sense had left a lasting impression. And even though the hype had died down, the essence of 'The Itachi Style' remained.

Hogwarts started getting back to its usual routine, but Itachi's impact was clear. Hogwarts fashion had become more relaxed and individualistic.

However, through all this, Itachi remained the same. Unfazed by the attention, he stuck to his usual style, setting an example of being comfortable in one's skin.

Luna was proud of Itachi. His influence had not just brought about a change in fashion at Hogwarts, but also instilled a sense of self-expression and comfort-first approach in others.

Itachi's casual attire had certainly made waves at Hogwarts. His return wasn't just a homecoming, it was a fashion revolution that changed the Hogwarts fashion landscape forever.

Personality, simplicity, and comfort were the essence of 'The Itachi Style.' And it was a lesson well learned for the students at Hogwarts, who were now more confident in being themselves.

After all, confidence in one's own skin is the most stylish thing one can wear. And Itachi Uchiha, through his casual and comfortable style, had taught everyone just that.

Luna could only smile at Itachi across the Great Hall, knowing that her husband had unknowingly brought about the real fashion revolution at Hogwarts.

Itachi's style was a testament to his character. Simple, practical, and unapologetically him. And that was the charm of Itachi, his sincere, genuine, and straightforward ways.

As the days passed, the echoes of the 'Itachi Style' could still be seen around Hogwarts. And thus, it was clear that Itachi Uchiha had left a permanent mark, not just in the hearts of the students, but also on the fashion scene at Hogwarts.