Natural Body Slimming Photo Retouching

I have a set of photos that need subtle slimming so the overall body line looks a touch trimmer while still remaining believable. The brief is to apply a moderately natural effect—enough to flatter, but not so aggressive that the edits become obvious to the casual viewer... (Budget: $10 - $30 AUD, Jobs: Adobe Lightroom, Graphic Design, Image Analysis, Image Processing, Image Upscaling, Photo Editing, Photography, Photoshop)