1girl arm_garter bag bathroom bathtub blonde_hair blush bra breasts cleavage cosmetics dress fingernails hair_ribbon handbag high_heels idolmaster idolmaster_cinderella_girls idolmaster_cinderella_girls_starlight_stage lens_flare light_smile long_hair looking_at_viewer makeup medium_breasts mirror nail_polish off-shoulder_dress off_shoulder official_art ohtsuki_yui ribbon smile solo sparkle standing standing_on_one_leg underwear very_long_hair