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1. The trousers must be skinny;
2. The trousers should end at the ankle (little too long on Rose Byrne there);
3. The trousers should have an evening shine to them — either in leather like Solange Knowles, or tuxedo satin like Olivia Palermo;
4. and finally, you should team the trouser with a heel and a cool, cropped top. Unless you are in your twenties, when a super cute hipster jumper like Shailene Woodley is an awesome choice.
There you go. Embrace the pants. You can do it.