Some would argue that sleep is a foreign concept for most newborn babies - but not according to these incredible pictures.
Tiny children, some just days old, have been pictured in various states of blissful repose and the results are adorable.
One 13-day-old girl lies on a flower bed, another rests its chin on its hand as if contemplating the mysteries of life.
Adorable: A four-week old baby takes a nap on a pink blanket.
Pensive: This 13-day-old baby girl looks like she has a lot to think about.