Sounds like a very stupid story. Bonino is an experienced politician who travelled for years as EU commissioner and Italian minister. I remember rhinking she wore very elegant scarves in Iran in a very nonchalant way. She certainly would travel with her own scarves to Iran and Saudi Arabia ...
Israeli PM to Palestinian President Abbas: We must fight terror together (Haaretz)
from the article: How a head scarf almost got Italian FM's visit in Tehran canceled