U-Olga Marie Animusphere from Fate Grand Order

Vanilla: grey hair, long hair, short braid, ascot, multicolored jacket, black jacket, orange jacket, frills, white skirt, pantyhose

Super President: grey hair, braid, single horn, long hair, orange eyes, green ribbon, huge white horns, crown, bodysuit, navel, striped bodysuit, fur-trimmed cape, ascot, gloves, blue sash,

1st Ascension: orange eyes, grey hair, long hair, black ribbon, hoop earrings, large hat, sundress, white dress, capelet, black gloves

2nd Ascension: 1girl, grey hair, braid, single horn, long hair, orange eyes, earrings, huge black horns, crown, bodysuit, navel, red chain, cape, ascot, gloves, long wrist cuffs

Unbeast: grey hair, long hair, orange eyes, braid, earrings, black ribbon, flaming horn, white shirt, red necktie, pencil skirt, print pantyhose, belt, red gloves, fur-trimmed coat, coat over shoulders

Bikini: grey hair, long hair, braid, orange eyes, single horn, black bikini, huge White horns

I think I managed to keep her second ascension distinct enough from her super president form. But I'm afraid you won't get the boots right unless you impaint them.