Valerie Harper — I’m ‘Dancing with the Stars’ Despite Terminal Brain Cancer

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Valerie Harper
— whom doctors gave three months to live back in March due to her terminal brain cancer — hasn”t just defied medicine by staying alive … she”s signed on to “Dancing with the Stars.”

As we reported, 74-year-old Harper — famous for playing the role of Rhoda on “The Mary Tyler Moore Show” — announced she had been diagnosed with leptomeningeal carcinomatosis, a rare form of cancer in which cancer cells spread into the membrane surrounding the brain.

Doctors gave her roughly until June to live … but it”s already August, and we”ve learned she”s doing so well she is set to appear on the upcoming season of “Dancing,” an extremely physically-demanding reality show.

We”re told Valerie and her partner Tristan have already been practicing for two days, and she”s surprisingly good. Our sources say she”s completely self-sufficient and doesn”t need any special assistance … at least so far.

our sources broke the story … Leah Remini will also be on the next season, as well as Snooki, Elizabeth BerkleyAmber Riley from “Glee,” Christina Milian, and Keyshawn Johnson.