There is no clothing code for travelers, thus the typical holiday attire is fine. In public, jeans, t-shirts and shorts are all appropriate. However, you should dress modestly when visiting places of religious; it is best to wear a long-sleeved shirt and knee-covering pants or skirt. In Muslim places, women should also have a head scarf with them. You might need to take off your shoes to enter some places of worship, so having slip-ons could be helpful.
It is also crucial to remember that, other than inside attractions, there are no clothing codes in Uzbekistan! Although it is not illegal to wear inappropriate clothing in this beautiful country, it is nevertheless a good idea to dress in accordance with local customs, culture and religion.
It is important to remember that not every lovely building facade you see is a mosque. The one above leads into a marketplace, so you can keep your clothes on from outside.
Outside of the locations, visitors are free to dress however they like, whether they are in the historic city of Bukhara or the streets of contemporary Tashkent. And if you travel in November, you can see women wearing shorts and tank tops and lots of men wearing shorts and t-shirts.