She can’t wear pants.

This is technically illegal in Paris unless she is riding a horse, holding the reins of a horse, on a bicycle or holding it by the handlebars.

[Source: http://nymag.com/fashion/09/fall/58328/ ]

Women banned from wearing trousers in Paris
A decree banning women from wearing trousers in Paris is still technically in force, it emerged on Monday, making the laissez-faire French capital theoretically stricter than hardline Sudan in the fashion stakes.

Source: http://www.telegraph.co.uk/fashion/fashionnews/6583074/Women-banned-from-wearing-trousers-in-Paris.html