Short answer: use the shopping apps for THE ICONIC, ASOS (AU), Princess Polly, Showpo, Cotton On — plus big Aussie retailers like Kmart, Myer and David Jones and global fast-fashion apps (SHEIN/Temu/NA-KD). Those apps all carry multiple denim mini-skirt styles that match 2025 mini trends (micro minis, pleated/tenniscore, frayed hems, two-tone/patchwork). (mamamia.com.au)

More detail (quick guide)

• THE ICONIC app — wide selection of denim minis (including trending pleated and cargo styles) and lots of Australian brands. (mamamia.com.au)
• ASOS (Australia app) — stocks many denim mini shapes (micro minis, A-line, button-front and novelty washes). Good for trend-forward pieces. (who.com.au)
• Princess Polly app — Aussie fast-fashion label known for youth-driven minis (high-rise, frayed hems, skorts/skirt hybrids). (jamiewortman.shop)
• Showpo app — popular Australian retailer with recycled-denim and statement minis in current cuts. (sydneyfashionsale.com)
• Cotton On app — affordable everyday denim minis and seasonal micro/mini lengths, available across Australia. (lyst.com)
• Kmart, Myer, David Jones apps — budget to department-store ranges; good for basics, viral fast-selling minis and occasional designer drops. (See coverage of viral budget items from Kmart.) (news.com.au)
• Global apps used in Australia: ASOS/NA-KD/SHEIN/Temu/Next — if you want variety or international styles (note shipping/returns differences).

Quick shopping tips

• Search app categories for “denim mini”, “denim skirt”, “micro mini”, “denim skort” or trend terms like “pleated denim” or “frayed hem”.
• Filter by length (mini/micro), waist (high-rise), and wash (light/acid/black) to match the 2025 mini trends. (jinfengapparel.com)
• Check sizing/returns on each app before buying — minis vary a lot by brand.

If you want, I can open a few current listings in those Australian apps and show specific skirts (prices, styles, links) — would you like that?