This t-shirt featuring Supreme Court Justice Ruth Bader Ginsburg is available online. (NotoriousRBG/Tumblr)

Supreme Court Justice Ruth Bader Ginsburg's rap name is the Notorious R.B.G. At least, that's what her fans on Tumblr call her. Ginsburg recently praised the Tumblr page and admitted she owns a few Notorious R.B.G. t-shirts.

"I think a law clerk told me about this Tumblr and also explained to me what Notorious R.B.G. was a parody on," Ginsburg said to NPR's Nina Totenberg. "And now my grandchildren love it and I try to keep abreast of the latest that's on the Tumblr. I have - and in fact I think I gave you a Notorious R.B.G. [t-shirt]. … I have quite a large supply."

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The nickname is a reference to the late rapper Notorious B.I.G., or Biggie Smalls. In an interview earlier this year with Katie Couric, Ginsburg commended the fan page, which pays homage to Ginsburg "in all her glory."

"She has created a wonderful thing with Notorious R.B.G.," Ginsburg said of the site's creator, Shana Knizhnik, a law student at New York University.

Knizhnik started the Tumblr page last year, but saw the site's popularity skyrocket following Ginsburg's dissent in the Hobby Lobby ruling this summer.

"I feel absolutely humbled to receive praise from Justice Ginsburg herself," Knizhnik told ABC News.

"My intention with the Tumblr was always to honor her incredible work as a lawyer, feminist and jurist, and it is so gratifying to know that she appreciates that, as well as the humor behind the title."