I am so exited about Nicki! I just saw the leaks and will describe them to you:

Nicki:

Has straight medium length brown hair with blonde streaks. She has gray eyes fro what I can tell (the image is blurry) She has the joss face mold and her meet outfit is a navy blue dress with a white tee-shirt. She has navy blue shoes and socks that are white with a blue stripe. She has a checkered pink and purple top and it seems her book is a Journal like Kavi's.

Isabel:

Isabel has blonde medium length hair. She has green eyes and the joss face mold. She and Nicki have the light skin tone. Her meet outfit in my opinion is bad. It is a textured rose pink long sleeve tee with a cropped pullover vest on top. She has a purple checkered skirt same as Nicki's jacket. She has really long white socks and pink elevated clogs. She also has a journal.

Thanks for reading and I hope this was helpful!