Yep, barely legal, from their wiki entry:

"Prussian Blue was a white nationalist pop teen duo formed in early 2003 by Lynx Vaughan Gaede[1] and Lamb Lennon Gaede,[2] fraternal twin girls born on June 30, 1992, in Bakersfield, California.[3] The twins have referred to the Holocaust as a myth [4] and their group has been described as racist and white supremacist in nature. [5][6]"

I only know about em cuz an old, defunct board I was on people would sometimes post that above pic when someone would post some racist bs.