Online, I saw a tall woman stating that her work is requiring them to wear a dark gray suit. But, she is allergic to wool and struggling to find something that works. Of course, I had to see what I could find. Here are a few options:

1. Tall Gray Vest
   
2. Wide Leg Tall Trousers
   
3. Custom Made Suit
   
4. Another Custom Made Suit
   
5. 3rd Custom Made Suit
   
6. Tall Printed Blazer
   
7. Tall Gray Blazer

Maybe with the change of the season, more options may become available in ready made clothes. But, these appear to the best options at this time.