Disclaimer/Note: Finally got to port this one for Illustrious which is the latest update, the Illustrious version is an all in one with the 3 outfits, I tried doing that for Pony at the time but I didn't liked the results so I kept the Summer Pony version independent.
Tags for Illustrious:
This one works well with weight 0.8
Default Outfit:
Trigger: surtr default
Appearance: red hair, long hair, purple eyes, slit pupils, large breasts
Default Outfit: black dress, black thighhighs, boots, cleavage, sleeveless, black jacket, open jacket, thigh belt, detached collar, layered dress
Liberte Outfit:
Trigger: surtr liberte
Appearance: red hair, long hair, high ponytail, purple eyes, slit pupils, large breasts
Default Outfit: crop top overhang, black shirt, short sleeves, miniskirt, red skirt, pencil skirt, midriff, kneehighs, black footwear, navel, thigh strap
Colorful Wonderland Outfit:
Trigger: colorfulsurtr
Appearance: red hair, long hair, star hair ornament, purple eyes, slit pupils, large breasts
Default Outfit: black bikini bottom, white babydoll, side-tie bikini bottom, front-tie top, criss-cross halter, detached sleeves, burnt clothes, thigh strap, sandals, bracelet, long sleeves
Tags for Pony
Default & Liberte Outfits:
This one works best with weight of 0.8
For Default Skin: surtr default, slit pupils, purple eyes, black dress, black thighhighs, boots, cleavage, sleeveless, black jacket, open jacket, thigh belt, detached collar, layered dress
For Liberte Skin: surtr liberte, slit pupils, purple eyes, high ponytail, black crop top, miniskirt, red skirt, pencil skirt, lowleg skirt, midriff, kneehighs, black footwear, navel
Tags for Pony
Colorful Wonderland:
This one works with weight 0.8 to 1.
Trigger: colorfulsurtr
Appearance: red hair, long hair, large breasts, horns, purple eyes, slit pupils
Main Tags: black bikini, side-tie bikini bottom, front-tie top, white shirt, criss-cross halter, detached sleeves, burnt clothes, thigh strap, star hair ornament, sandals, bracelet