This series won't get boring. Ever. Your model's 'I hope you're having half as much fun as I am' expressions and 'let's play dress-up' accessories make me think of the girlfriends I wish I had photographed more! I see you've used flash in some shots, but it's subtle enough to keep a natural-light tone which is essential here. Love it.
I wouldn't concern myself with people whose only feedback is that something is "boring". To my mind, these are people who tend to have way too much time on their hands. Your work is superb, and the models you work with are lovely. Don't change a thing, unless *you* are of a mind to do so on your own... - Paula