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from left: Bridget Sojourner, Gitte Lee, and Beatrix Ost. Photo(s) courtesy of Refinery29 and Advanced Style.

We've been all about the '70s revival this season--from tassel earrings, to platform sandals. Just when we thought we'd explored every nook and cranny of this trend, along come the septuagenarians: women in their '70s. These well-dressed ladies aren't just having a moment either--they've been on-trend for decades.

Ari Cohen of Advanced Style and our friends at Refinery29 profiled nine stylish older women and what makes them so fabulous. Model-activist Bridget Sojourner proudly calls herself an activist against "Ageism," while artist Beatrix Ost pulls off a turban better than anyone we know. And we're not the only ones taking notice. French designer Céline featured Gitte Lee in its Fall 2010 print ads.

With careers and fashion chops to make any 20-something green with envy, these ladies are living proof that style is truly timeless.

To learn more about Ari's women, head over to Refinery29.