First of all the Arabic text of Quran doesn't say (from their heads over their faces).
And second of all "[The specific, time-bound formulation of the above verse (evident in the reference to the wives and daughters of the Prophet), as well as the deliberate vagueness of the recommendation that women “should draw upon themselves some of their outer garments min jalabibihinna)” when in public, makes it clear that this verse was not meant to be an injunction (hukm) in the general, timeless sense of this term but, rather, a moral guideline to be observed against the ever-changing background of time and social environment. This finding is reinforced by the concluding reference to God’s forgiveness and grace.]"(Muhammad asad)
I should have taken the translations which you would surely agree hence there you go:
033.059
YUSUFALI: O Prophet! Tell thy wives and daughters, and the believing women, that they should cast their outer garments over their persons (when abroad): that is most convenient, that they should be known (as such) and not molested. And Allah is Oft-Forgiving, Most Merciful.
PICKTHAL: O Prophet! Tell thy wives and thy daughters and the women of the believers to draw their cloaks close round them (when they go abroad). That will be better, so that they may be recognised and not annoyed. Allah is ever Forgiving, Merciful.
SHAKIR: O Prophet! say to your wives and your daughters and the women of the believers that they let down upon them their over-garments; this will be more proper, that they may be known, and thus they will not be given trouble; and Allah is Forgiving, Merciful.
The above three translations are also slightly different. Hence would you disregard them? I guess not...every translator/scholar puts the words which he finds suitable. At the end of the day we are talking about JILBAB!....
*I think at this stage it would be very nice to know how the JILBAB looked like 1400 years ago?*