2018 anthro areola big_breasts blue_eyes breasts cute earth_pony equine erect_nipples eyebrows eyelashes female friendship_is_magic hair hi_res horse mammal my_little_pony navel nipples nude open_mouth open_smile pink_background pink_hair pinkie_pie_(mlp) plymo pony portrait pose presenting pussy signature simple_background smile solo standing straight_hair teeth three-quarter_portrait tongue