Twice as Nice?

For those of you who are as addicted to Entertainment Television (E!) and PerezHilton.com, I am sure you have been hearing about the news surrounding the Disney star Miley Cyrus and the pictures taken of her that were supposedly "too sexy." There has been a ridiculous amount of press surrounding these pictures and how inappropriate they are, etc. They were shot by famous photographer Annie Liebovitz for Vanity Fair magazine and show the young star seemingly topless using a white sheet to cover her body and leaving her back exposed. You can go to www.perezhilton.com to see the pictures...
After the pictures leaked on the internet, the media exposed a photography of Diana Ross also taken by Annie Liebovitz in the late 1980's or early 1990's. The picture of Diana was in the exact same layout and pose as Miley - seemingly topless with a white sheet covering her and exposing only her back. It was taken from the exact angle with the same facial expression, everything. It began to make me wonder... how often does creativity repeat itself? Is it impossible not to repeat itself?
I find myself especially wondering this since, with the more photographs I take, I find myself taking pictures at the same angles and proximities because I am comfortable with knowing their outcome and they consistently produce powerful pictures. However, especially using live models, is it ever possible to find new angles and ideas? Are we simply always going to be drawn to certain "looks" or "poses?" On a positive note, maybe those angles or type of pictures are what define each person's niche in photography. Just as some like taking pictures of landscapes and always seem to know how to produce striking pictures, others are good finding brilliance in inanimate objects. However, I still can't help but wonder...is there a limit to our creativity, or is the ability to be consistent and have repitition what define's people's works?