I gathered some female idol pics...
1. Uniform, the design and colour are all the same
2. The top or bottoms are one item and the other item is similar but in different colours
3. The colour and pattern is in uniform but each design is different.
4. Nothing overlaps and they're all different.
5. Other
Source: original post
1. 333
2. 3 is good but the coordi needs some coordination.
3. I like 3 and 4.
4. I like 2,3 but if it's done well, 4 too.
5. 333 Mamamoo, what's that song called? Um Oh Ah Yeh? The outfits during that were nice
6. 3, since my idols are multiple people, 4 would be too crazy
7. 1 or 3, if it's too different, I don't like it
8. 333, When IZ*ONE did La Vie En Rose and Fiesta and WJSN's coordi are really good at that
9. I like 2, 3 and if it's done well, 4!!
10. 333, I hate 4 the most
11. If it's done like BLACKPINK, then 4, if not, 3.