Accessory maker LuxMobile prides itself as being the "leader in fashion forward mobile accessories," so it's no shock that the company has debuted a series of iPhone 4 cases in collaboration with Lady Gaga, dubbed the Lady Gaga Mobile Collection ($30). Available in six different designs with names such as Queen and Distortion, all of the cases share the same generic shape: they're simple hard plastic shells that snap around the iPhone 4's body. Full…