The Court of Appeal has reserved its judgment on whether a pregnant woman committed "a crime of violence" against her child when she drank a "grossly excessive" amount of alcohol while pregnant.
After a day-long hearing Lord Dyson, the Master of the Rolls, sitting with Lord Justice Treacy and Lady Justice King, said the court would take time to consider its decision.
Lawyers for child "CP", who cannot be named for legal reasons, asked three judges to rule in a test case that the girl, now aged seven, is entitled to compensation after being born with an alcohol-related disorder.
The Court of Appeal is discussing a case today which could have huge implications for the way women behave during pregnancy.
A court ruling on whether a mother caused her baby's growth problems through drinking could pave the way for it to be criminalised.