Question

She is wearing an outfit of new mourning change to passive voice​

Answer 1

Answer:

An outfit is being worn of new morning by her.

Explanation:

active voice structure: S + is/am/are + v4 + Obj

passive voice structure: Obj + am/is/are + being + v3 + by + S

Answer 2

Answer:

1.An outfit of new mourning is being worn by her.

OR

2.An outfit is being worn by her of new mourning.

Explanation:

This is your answer.

Both the answers are correct ,you may note which one is comfortable to you.

Hope it helps.