Thongs/lycra in Rio de Janeiro

Hey to all. Gonna be in Rio de Janeiro in a few and was wondering if there are any stores (offline) where you can get lycra/spandex and/or thongs and jocks. Would be awesome to get some information. Thanks so much :-)

I've been to Rio a last year and I thought Hermes Inocencio was super cute. It doesn't have thongs and jocks really, but really cool self-made swimwear and silk shirts.

Thanks for the tip, I'll have a look when there :-)