I'm crazy about dolman sleeve tops. Many of the tops have a "drapey" fabric and are very comfortable. I've found that they really work well with a pear shape (like my own) by balancing everything out nicely. I do think they might be tricky for a petite person, only because a petite figure might get lost in that extra fabric.
This top from Ann Taylor loft looks like a fun top for a Friday night out: