As a fitness instructor, let it be known that I promote anything that is "healthy" through proper eating and regular exercise. :) So if I am writing a post about achieving a slim look through styling, this should (as my source suggested) suit all shapes and sizes with the end-goal of achieving an over-all flattering look. ;) So here are three looks from the list of items identified:
1. Black Midi Dress. According to the same website, choose an LBD in midi length because it is more flattering than any other length. Technically speaking, midi should be anything that hits mid-calf and not just-below-the-knee length. But a vast majority of the dresses sold in the high street come in this length which I believe is more flattering I think like the one below. :P They should come up with a new term for that length though. ;) See related article about LBDs here.
2. High-Waist Trousers. Regarding the same article, the correct item should be high-waist denims but I don't think they should limit it to that article of clothing alone. I've had this trousers for more than three years now for the very reason of this post. It'd be hard to let this go. ;) See related article about neck scarf here.
3. A Line Skirt. It cinches-in your waist and flares out at the hemline to make your waist look smaller! Yes, this should be right up there with LBD on the list of items every woman should own! Check also another look of this skirt here.