Frans Hofmeester filmed his daughter Lotte once a week for the past twelve years and produced this time lapse film. We've seen this kind of thing before (Kalina, etc.) but the use of short snippets of video instead of still photos adds something.
Hofmeester has also filmed his son in the same manner for the past nine years. (thx, david)
Update: Lotte recently turned 16.
(via @Raaphorst)