If there is something I try to with every outfit, that's making my legs look longer and slimmer. I don't like my legs at all, so I try to get their best.
Through my outfit pics, I've realized I don't like wearing mini skirts. They make me look... let's say 'not very slim'! :P Thus, I try to wear knee length skirts/dresses like this or this.
At the same time, I usually wear black tights, as they are definitely the most suitable for my plump legs. That's why I didn't like this or this.
I have also some tips to get the optical effect of longer legs, such as wearing tights which are the same colour as the shoes (like here or here), or wearing leggings in the way I wear them today:
Of course, high heels are obligatory. And these are stunning!: