What it is Permissible for the Suitor to See of His Fiancée Before the Wedding

Question :

If a man makes a proposal of marriage to a young woman, is it obligatory for him to see her? Also, is it correct for the young woman to uncover her hair and to reveal her beauty more for her fiancé? Advise us, and may Allah benefit you.

Answer:

There is no objection, but it is not obligatory. Rather, it is preferred for him to see her, and for her to see him. This is because the Prophet ordered the suitor to look at her, because that is more likely to produce harmony between them, so if she uncovers her face, hands and head for him, there is no objection, according to the most correct opinion.

Some of the scholars said that it is sufficient for him to see her face and hands, but the most correct opinion is that there is no objection to him seeing her head, face, hands and feet, according to the aforementioned Hadith. But it is not permissible for him to do so, while being alone with her; rather, her father, her brother or another must be present with her. This is because the Prophet said:
"A man may not be secluded with a woman except with a Mahram."

He also said:
"A man should not be alone with a woman, for verily Satan makes a third."

Narrated by Imam Muslim with an authentic chain of narrators, on the authority of 'Umar, may Allah be pleased with him."

Source:
Ibn Baz
Fatawa Islamiyah, Vol. 5 Pages 207-208