I was looking pictures of the Satmar wedding and I found that some women where wearing a headscarf with no hair out and others where wearing a wig or a wig with a scarf.
Why is that ? What is the official rule for Satmar ?
Satmar frowns upon wearing a wig only. Besides for that, each woman (family, husband...) decides. In fact Satmar is one of the least uniformly dressed chassidic groups, both among men, and among women. The most common mode is a wig with something on top, like a band, a hat, or a scarf. However, some will wear a shpitzel (cloth or foam in the general shape of hair – think animated movie), or only a scarf. At home, many will wear a turban, which is always worn without a wig. The hair will never stick out, as the Hungarian custom is to shave the head after marriage.
The rule (which stems from Grand Rabbi Joel Teitelbaum's opposition to wigs) is only enforced in places where Satmar is in complete control, mainly in Kiryas Joel, NY, and then only for residents, and not for visitors.
Source: Experience living in the Satmar communities of London, Monsey, Kiryas Joel, and Montreal. My wife's family is Satmar too.