Does it Feel Good
Here is the thing, when something feels good, a few things happen. First, you will enjoy wearing it! Second, that means you will wear it often.
Think about your uniform. These are the items and outfits you tend to wear the most. Then, plug in the trendy item you are considering. If you can immediately add it to an outfit- then I say GO FOR IT!
We often buy clothes that remain unworn. So, finding a fun new item that will enjoy wearing is a win!