Kindly post an Аниме series where the protagonist are all girls..

Sailor moon!!!!! :D

Yuruyuri или Mahou shoujo madoka magicaa may be two good alternatives for Ты but i strongly recommend kore wa zombie desu ka? too, most of the characters there are also there and the humor is quite hilarious, but itsvery much harem if Ты are ok with that.

my otome или my personal Избранное my hime~

Bamboo Blade

well the 2 main character of Nana r both girls....

Mahou Shoujo Madoka Magica~

Sailor Moon (as already posted) and Pretty Cure

K-ON!!

Claymore