What to wear as a female tourist in Kenya?
If you don't want to upset the natives, dress modestly. This implies you should avoid wearing shorts or skirts that are cut above the knee. It also entails wearing clothes that conceal your shoulders and cleavage.
Loosely fitting jeans and shirts are a good choice for walking to the streets and public marketplaces. When entering a religious facility, such as a church or mosque, you must exercise particular caution because the restrictions are stricter here. You do not want to get booted out for being inadequately dressed.
If you are at your hotel or in your tour van, you may relax and not worry because you will not encounter many locals in this environment.