Ladies clothes. Professional Style (Howell, MI)

I'm getting ready to start going to court with my son this month. He is having to go to court to court to get awarded visitation with his child. and I need help with dress clothes to wear for court.
A Black and a gray xl blazer's office suit kind Blazers.
A couple of white blouses long sleeves would probably look better.
A couple of dress pants to go with the blazer's.
Size I'm not sure if have a 39 waist and I'm
I really appreciate any help .
We are going to probably start going to court this month.
Can you help with this request?
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