Nostril reduction surgery (called Alarplasty / Alar Base Reduction) is a procedure that can narrow the width of the nostril base, decrease the amount of nostril flaring, and/or decrease the size of the nostrils. It is important to realize that the smile muscles can pull the base of the nose up and outward even if an alar base reduction is performed and the flaring may not totally be corrected.
To get a better understanding of what your nose would look like after surgery, your prospective rhinoplasty surgeon should be able to show you before and after computer simulations. Many rhinoplasty surgeons use computer imaging, and recently 3D rhinoplasty imaging has become available (see http://cbs11tv.com/health/Rhinoplasty.plastic.surgery.2.1077611.html).
