How are the levels calculated?
This is all that's been confirmed so far:
•POPULARITY• -get hearts on your answers
-get comments on your answers
-get hearts on your miifotos
-get comments on your miifotos
•STYLE•
-change your current clothes [ONCE PER DAY]
-check put the shop [ONCE PER DAY]
-share a miifoto [ONCE PER DAY]
-get comments on your miifotos
-get hearts on your miifotos
-change outfits (as pointed out by ChronoD)
It also seems that buying new clothes on the shop, or earning them as prizes on the Drop minigame has varying effects on the style bar, as for me I've managed to level up from trying new clothes even after the once per day thing (or at least I think so) but sometimes it just doesn't change at all, perhaps buying them does not increase it (as is Jeremy Avalon's case) but earning them does. As for the popularity points, it may be limited to a specific amount per day (or maybe my answers aren't worthy enough of other people's hearts and comments ;-;) also, adding friends could have an effect on the popularity level, has anyone tested that? As for me I have over 70 friends by adding random strangers and I'm on popularity level 7 but I've been there for a while.
Also, I've tried what ChronoD said he would try yesterday, my results were: I started at level 6 with no extra points, did all of the pnce per day stuff and the war was at about 3/4 changing clothes or outfits had no effect.
I did some testing. I will put conclusions first, then my process second.
Conclusions:
Popularity increases when anyone else likes or comments on your posts. There doesn't appear to be a maximum on this.
Style goes up whenever you change clothes to a new combination. There doesn't appear to be a maximum on this.
Testing Process:
Popularity
I had one friend like as many of my posts as he could and comment on them as well. After a lot of actions, my popularity still appeared to increase. I had a second friend do the same, with the same effect.
NOTES: It's difficult to tell precisely the effect since there seems to be a delay in the update. After all, the friend has to like it, it has to connect to the internet and save the information, then you have to receive the information and it has to adjust accordingly. It seemed to update in batches with up to an hour delay.
Style
I used 3 specific outfits that were already preset. I cycled through them continuously. My style went up to a certain level. I cycled through them a few more rounds. My style was at the same level. Therefore, cycling doesn't seem to have an affect after a certain point. I tried two more outfits, once each. Style went up. I tried to cycle them, Style did not change. Therefore, it appears to be a one time effect. I took those outfits and removed parts. Using one outfit (consisting of a hat, bowtie, shirt, and pants), I used all combinations of those 4 objects (16 in total). Each one APPEARED to have an effect on style, although the change was small and difficult to know for certain. My overall style level did increase during those 16 versions, so some increase must have happened.
At this point, I had used 20 unique outfits and it still appeared to increase, suggesting that there is no maximum, or that it is at least higher than 20.
I haven't been able to test over multiple days, but it seems like it should reset since I've only been using 3 outfits regularly and still had a decent style level.
Hopefully this helps you out some. Let me know if you find any contradictory data and I'll see if I can do some additional testing.