Sasuke might be initially shocked and then try to act like he doesn't care. Sakura could either laugh hysterically or be a bit more empathetic and help Naruto adjust if it's not a prank situation. Kakashi would probably just give a knowing smile and make some light - hearted comment. Shikamaru would likely be too lazy to really react strongly, just a shrug and a muttered 'troublesome' under his breath.
Sakura might be initially shocked and then start laughing uncontrollably. She would probably tease Naruto about it for a while. Sasuke, on the other hand, would likely just give a slightly raised eyebrow and then act as if it's not a big deal, but deep down he might be a bit amused. Kakashi would probably make a dry joke about it.
Naruto would be extremely devastated. He sees Kakashi as a mentor and father figure. He might go into a period of deep depression at first, but then turn his grief into motivation to become stronger. Sakura would also be very sad and might focus more on her medical skills, vowing to save more lives in Kakashi's memory. Sasuke might have a more internal reaction, feeling guilty if Kakashi died protecting him, and it could further fuel his own goals, whatever they may be at that time.
The village elders would also be concerned. They might start to think about the future of the village without Naruto. Some might even start looking for a temporary replacement for him as Hokage, which could cause some internal conflict in the village as not everyone would agree on who should take over.
Ron could have a more comical reaction at first. He might laugh and make some jokes about it, but then when he realizes it's important to Harry or that it serves a purpose, he would come around and be protective of Harry in his new attire. For example, if other students start to bully Harry for wearing the dress, Ron would stand up for him.
Another reaction could be confusion. Draco might not know how to feel. On one hand, he has his Slytherin pride and his clothes are part of that. But on the other hand, seeing Hermione in his clothes gives him a strange feeling in his stomach. He might end up being more curious about Hermione and her reasons for wearing his clothes.
Iruka would be concerned at first, thinking if Naruto is in some sort of trouble. But once he realizes it's just a situation, he would be more accepting. As for the other ninja in the village, some might be envious of Naruto's ability to pull off the girl look, while others might be confused and keep their distance until they understand what's going on.
Sasuke would be deeply affected. He and Naruto had a complex relationship. He might feel a sense of regret for all the times he had pushed Naruto away. His reaction could range from anger at the situation to a new - found respect for Naruto's sacrifice.
Sakura would be completely devastated. She's been in love with Sasuke for so long and has a deep bond with Naruto too. She might go into a deep depression and lose her will to be a ninja for a while.
Well, take Sakura for example. If in a fanfiction she's wearing a bright, bold - colored outfit with lots of accessories, it might show her confidence and growth as a character. Maybe she's moved beyond her insecurities and is now more assertive, and her clothes reflect that.
Sasuke would probably be one of the most affected. He might feel a mix of guilt for not being able to prevent Naruto's death in the first place and relief at his revival. Sakura would be overjoyed, and she'd likely be the first to rush to Naruto's side to check if he's really okay. Kakashi, on the other hand, would be more reserved in his reaction, but still happy to see Naruto back.