All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
The Muslims should not do this habit or keep on doing it even if the ladies upon whom the groom enters wear Hijab, as this may provoke temptation. Moreover, some scholars are of the view that it is not permissible for a woman to look at a man even without any desire. As regards a woman looking at a man with desire, then this is not permissible according to the view of all the scholars .
It should be noted that whoever knows that the reasons of temptation are so many nowadays, then it becomes clear to him that it is impossible to avoid temptation when a woman looks at a man. Indeed, being safe from this has no rival.
For more benefit, please refer to Fatwa 84994.
Allaah Knows best.