I have a Butterick Making pattern #6643 that features a close-fitting, underbust corset. Designed by Patterns by Gertie, the package includes instructions and patterns for the following:

• Close-fitting, underbust corset features self-lined and interfaced front and back , contrast side panels, flat steel boning, twill tape waist stay, two-piece grommets and back ribbon lacing, and lingerie elastic for hanging. 

This pattern is for adults - it is a size E5 and is for misses' sizes 14, 16, 18, 20 and 22. This is a brand new, uncut pattern.  It is from a smoke-free home and shipping is free in the U.S.  Please check my other listings - I have many other patterns and will be glad to discount multiple purchases (10% off for two items, 15% off for three items and 20% off for four or more items).