"According to a recent report, a baby can experience feelings such as happiness and pain much earlier in its development than previously thought.
Many experts dispute these claims, however, and say that a foetus is naturally sedated and unconscious in the womb and cannot experience any senses.
Professor Stuart Campbell who took the picture at his London clinic with 3-D and 4-D scanning equipment said:
'This is a joyful expression of the humanity of the foetus. I have seen a foetus making a crying face at around 18 or 19 weeks, but not a nice smile.'
'This is the earliest on record - it is just a delight.'
Professor Stuart Campbell is the former head of obstetrics and gynaecology at King's College and St 's hospitals in London.
The baby is due in January and its parents, Louise and Sam Henry from Swallowfield, Berkshire, admitted they were stunned to see the smiling face during a routine scan.
This case would will prompt further calls from doctors and campaigners to lower the upper abortion limit from 24 weeks because by this stage the unborn baby can already feel agonising pain and the procedure is therefore inhumane."We all know that the upper abortion limit should be ZERO weeks, but otherwise a great story.