снявши голову, по волосам не плачут(it is too late (and useless) to worry (express regrets, sympathy) when the whole thing is lost or irrevocable steps towards disaster have already been taken)
снявши голову, по волосам не плачут(it is too late (and useless) to worry (express regrets, sympathy) when the whole thing is lost or irrevocable steps towards disaster have already been taken)