Things to get

• Shimapan

  • Jess: #13 from here, 2x shima and 2x checked: https://world.taobao.com/item/45359356623.htm

  • Jess: First one from here, blue shima himopan: https://world.taobao.com/item/526154875811.htm

  • Kat needs shimapan too!

• Sukumizu for Jess, the one marked [2] with the flat bottom, XXL (89.90 RMB): https://world.taobao.com/item/529798689790.htm

• Zippered mizugi for Jess, black free-size: https://world.taobao.com/item/537866341635.htm

• Gym uniform for Jess, red large: https://world.taobao.com/item/8139972247.htm

• Fashion tape

• Elf ears: https://world.taobao.com/item/541611149498.htm

• Thighhighs for Jess
• School PE outfit for Jess?

• Kitty keyhole bra: https://world.taobao.com/item/527535195410.htm

  • Adrian to spec colour/size/set
  • White, M-size, first option is 3-piece set

Backless sweater

This seems to be the search term: 性感露背高领毛衣无袖针织套头上衣 (Sexy Backless Turtleneck Sleeveless Knit Hoodie Top)

Looks like the standard size is ~70cm long, 12cm of which is the collar. If you're up to 165cm tall you're probably okay. Beyond that you'll want shorts or a skirt (or underwear).

• Sold out: https://world.taobao.com/item/543552188367.htm)--

• Jess' link, S/M/L sizing: https://world.taobao.com/item/544312579604.htm

• Kinda looks like rice goddess, or You; grey or black, M-size: https://world.taobao.com/item/543897630010.htm

• Grey, one size, looks kinda small or it's a tall model: https://world.taobao.com/item/538049175505.htm

• Grey, no size or colour option, looks way long (eyyyy): https://world.taobao.com/item/544612334532.htm

• Grey, one size: https://world.taobao.com/item/539104726186.htm

There exists this longer variant, no cable-knit but plenty long. Note that it may not be available in grey: https://world.taobao.com/item/537942693675.htm

Who needs them

• Yasemin: grey
• Jess?
• Kat?

Kat things

• Petal flowers, not the small clusters (16 RMB): https://world.taobao.com/item/37918316578.htm

• Crystal flower things (10.80 RMB): https://world.taobao.com/item/38145041431.htm

• Sequin things, the button that says "12" (8.50 RMB): https://world.taobao.com/item/38661099859.htm

• Silicone mat thing, green (18.68 RMB): https://world.taobao.com/item/541388280960.htm

Other stuff to gawk at

• Seifuku ribbon neckties: https://world.taobao.com/item/529054786799.htm

• Thighhighs in many colours: https://world.taobao.com/item/523259672011.htm

• Frilly ankle socks: https://world.taobao.com/item/41812729221.htm

• Stripey/diamond thighhighs: https://world.taobao.com/item/41768718259.htm

• Thighhighs with fancy tops: https://world.taobao.com/item/41810716811.htm

  • More fancy tops: https://world.taobao.com/item/537410807120.htm

• Heavyweight fake thighhighs: https://world.taobao.com/item/538205845512.htm

• JK uniform skirts: https://world.taobao.com/item/529052831199.htm

• Heavyweight tights, black or white: https://world.taobao.com/item/540123869459.htm

• Electrostatic tape: https://world.taobao.com/item/536912010884.htm

• "Open file socks"(开档袜) are... crotchless? https://7moe.world.taobao.com/category-1280403091.htm?search=y&parentCatId=1079008692&parentCatName=%C1%C3%BA%BA%A3%BF%CD%E0%D7%D3%C9%F1%D6%FA%B9%A5&catName=%BF%AA%B5%B5%CD%E0#bd

  • Uwah, high tech! https://world.taobao.com/item/544505073605.htm

• How to Shimakaze: 岛风