At the Giza Pyramids and other such places during the hot summer months, short sleeve-tops and even sleeveless tops are acceptable for women (especially when traveling with a tour group).
At Giza Pyramids iyo meelaha kale ee noocan ah inta lagu jiro bilaha xagaaga kulul, dusha gacmaha gaagaaban iyo xitaa dusha gacmo la'aantu waa u aqbali karaan dumarka (gaar ahaan markay la safrayaan koox dalxiis ah).