From Nookipedia, the Animal Crossing wiki
Snooty villagers are female characters in the Animal Crossing series. They are called snooty villagers because they appear big headed and arrogant in the games. They are usually portrayed wearing make-up and styling clothes which match their style, as well as owning luxurious looking homes, though there are some exceptions. In Animal Crossing: Wild World they might mention that they have a boyfriend. They are the female equivalent to the male cranky villagers.
Snooty villagers are well-spoken and sometimes appear offensive and rude towards other villagers, including the player. They are self-centered and sarcastic, but if the player talks to them often, they open up and become more talkative, sometimes give the player lessons in fashion. However, this doesn't prevent them from making the occasional scathing comment. Snooty villagers usually have exotic or upper-class names, or names relating to high-value items and gemstones, making them easy to distinguish when talking to villagers around the town.
Snooty villagers go to sleep at 2:00 AM, and wake up at 9:00 AM. In New Leaf, they wake up at 9:30 AM. Like with the peppy and normal villagers, they read "Ms. Nintendique" frequently, coming out with quotations from the magazine such as what their lucky item of the day is, or saying that they bought so much blush that the magazine gave them a shirt, and then they say, "Here, you can have it!" and give it to the player. They will often talk about Gracie and how much they love her clothing.
They will find it difficult to socialize with lazy, jock, and peppy villagers, who have conflicting lifestyles to their own. They don't understand how lazy villagers can relax and not worry about their physical appearance. Jocks often criticize snooty villagers for their lack of fitness, who can't fathom how someone can be so concerned about exercise but not about fashion, and peppy villagers frankly complain to snooty villagers about their rudeness.
Snooty villagers will get along with normal, cranky, and other snooty villagers, but also sometimes start fights with them.
Below are some (not all) quotes made by snooty villagers.
Responses will be:
"What was it?"
Below is relevant only to Animal Crossing: Wild World.
Snooty villagers will ask the player the following question to trigger their portrait-giving sequence:
All snooty villagers will say that at one point (if talked to enough).