Edit: cause I oughtta, the characters are, surname first,

Blond hair: Tsukino Usagi (Sailor Moon)

Brown hair: Kinomoto Sakura (Cardcaptor Sakura)

Cat ears: Momomiya Ichigo (Tokyo Mew Mew)

Plaid: Hinamori Amu (Shugo Chara)

Sitting: Kaname Madoka (Madoka Magica)