Several seasons back I invested in petite sized wooden hangers and it was one of the best things I did for my closet. I only brought so many here to FL since we flew and they are not exactly small and light. I brought at least enough for jackets and shirts that were not sleeveless so that I would not get shoulder bumps.
The rest I've had to collect from my BF's dry cleaning. Come to find out the pants hangers, that have the cardboard crossbar to drape slacks over, are about 16". Great fit in a pinch for smaller sizes. The wooden hangers I bought are 15.5" in comparison. I believe 'standard' hangers range from 17 to 18.
So, just a freebie/hack for those who are smaller in the shoulders and end up with those pesky bumps in the shoulders and arms of their garments because the hangers don't line up with our clothing's shoulders.