Photography is both my hobby and a substantial revenue stream. I once kept both worlds in the same application (Aperture), but over the last couple years, I've separated my personal work from what I shoot for hire.
The Velvet 56mm f/1.6 Lens from Lensbaby produces a creamy, uniquely soft, glowing image quality, and is great for capturing those dream-like portraits. You can control the softness with the f-stops and still achieve a shallow depth of field. Lensbaby is a third-party manufacturer, and offers versions of these lenses for all sensor sizes/brands.