Vip Members are yovillians who are part of the Vip. They get access to special items and features normal players cannot access. They are the only kind of people that can become Vip Dealers due to the fact that they are vip.
They have access to different items and clothing. They also get free hair and yocash regularely. So you can expect Vip members to be more wealthier than regular yovillians as well.