Sleeves above the the elbow is assur according to everyone, even MO rabbis. It’s specifically brought down by chazal along with covering knees.
Every MO enclave has some degree of tznius problem. Most OOT MO communities have a lot of women who wear pants. The 5 Towns derech of immodesty seems to favor wearing really, really short skirts. No, I don’t mean “at-the-knee,” I mean mini-skirts like goyish college students wear. Why single out the 5 Towns?
1) It’s where the OP happens to be
2) Contrary to popular belief, the mini skirts are halachically more problematic than pants.
3) Unlike most places that admit to being meikel and might even be proud of it (eg. Riverdale), the 5 Towns lacks all self-awareness.