Blues progressed in the competition after an impressive 5-1 success over Coventry United in round four.BCFC
The fifth round tie against Southampton FC next month has been pulled forward by 90 minutes.
This means kick-off at the SportNation.bet Stadium (Damson Park) will now be at 12.30pm on Sunday 16 May and comes after agreement between both clubs and the Football Association.
Blues progressed in the competition after an impressive 5-1 success over Coventry United in round four.
Opponents Southampton, who play in the FA Women’s National League Division One South West, reached the last 16 by knocking out Lewes FC of the FA Women's Championship.