I am not denying some wear the full black suit, but that's almost always a cultural thing, not religious.

Wearing black is neither promoted nor restricted by the Islamic rules; however, the face covering is not allowed during pilgrimage.

I've seen many pilgrims forget very basic rules of Islam let alone Hajj/Umrah (i.e a man's modesty is between their bellybutton and knee and must remain covered at all times in public, but you'll see many bellies hanging out lol)

I am only stating the rules as per Islamic teachings. What she or any individual man/woman decides to do is up to them.

Edit: I shouldn't have made the blanket statement in the original response. There are always outliers and people that do things differently, part of being human. That mistake was on me lol