Modesty and the Imahot
Question
There seem to be many sources in the Torah that heavily imply that our imahot covered their faces as well as their hair (the Me'am Loez says it about Dina, Rashi quotes Chazal about Tamar, Avraham didn't know how beautiful Sara was, Rivka covered her face when she saw Yitzchak). Did our Imahot cover their faces? If so, why dont we? and if they didnt, why does there seem to be so much evidence that they did?