Holidaying can go unimaginably nightmarish when you are not in the right attire in the right place. Lot of layers in an already hot African country can be as bad as mini skirts in Vatican City. Especially for women, clothing attracts lot of attention and it can make or break your holiday.
In Africa, Light clothing and comfortable shoes as there will be a lot of walking involved. Sunglasses, hat, bandana are essential when you go on a safari as it can be quite dusty there. Long skirts or manteaux are preferable as short skirts are not welcome in most of the places in Africa. Jean and a tank top could be the best you can wear there. While in Ireland you can experience hot, cold and dry weather all in a single day here. Ireland is one place where you cannot predict how the weather would be the next minute. It is advised that you wear layers of clothing here as it will be easy to cover up in case of sudden shower and peel of a part of it as the weather turns dry.
In places like India and Pakistan, it is important for women to cover up as much of their skin as possible. Traditional clothes like salwar kameez or sarees are the most worn here, though jean with a top which adequately covers your curves can also be worn with some french chemisier. In Middle East, its far more easier to mingle with the crowd and attract less attention from males is to buy an Abaya(a full length cloak that covers from neck to ankle with bottes). Important thing to remember when you are in Peru is that, theft is very common here and one has to avoid expensive jewellery while holidaying there.
In almost all the places jean and a casual top seem welcome. So just relax and enjoy your holiday.