loose clothing

Q: What is your opinion on women wearing fancy clothes to weddings as has become the habit nowadays. I am referring to events where there is full segregation and one attends in niqab and jilbaab however thereafter remove when only women present.

Also, is there fazeelat for those who adopt simplicity? My sister is getting married and family members are asking me to wear a nice dress. I generally wear a loose jubba in the house, so on the wedding day, would it be more preferable to wear what I normally wear or please the family and wear something nice. I have heard fazeelat for that person who adopts simplicity when he is able to wear something of higher rank.

Q: According to shariah, it is said that a woman should wear loose clothing. So, what type of dresses come under this title and what was the style of clothing worn by our Sahaabiyyas as I have heard that Ayesha radhiyallahu anha once liked a kurta which she later gave it in charity.