Check out the Isabella series by Jennifer Fosberry.
Isabella received the first book,
My Name is Not Isabella: Just How Big Can a Little Girl Dream?,
as a gift from my aunt and we both loved it. In the story the little girl imagines she is several prominent women in history such as Sally Ride, Marie Curie, and Rosa Parks. No pink, frilly princesses to be seen.
The second book,
Isabella: Girl on the Go, came out last year
was less impressive for me, but Isabella still requests it often. I'm sure the fact that her name is in the title doesn't hurt. This one has the main character imagining herself going to famous landmarks like the Statue of Liberty, Big Ben, and Chichen Itza. This story also features the father, whereas the first one featured the mother.
The third book,
Isabella: Star of the Story, comes out in April land I've already pre-ordered it on Amazon. This one features Isabella imagining herself as characters from classic children's literature. I am seriously excited about this one!
I would really recommend checking these books out if you're sick of princesses and would like to read a book that is about more than marrying a handsome prince. Each of the books also has a reference guide in the back explaining each person or place portrayed in the book. This section is particularly helpful when he tells you he's never heard of Chichen Itza.
And no, I didn't receive anything for recommending the books. I just happen to love them and thought you might too.