Oprah says she’s going to reveal a big “family secret” on her Monday show. No, it’s not The Secret. That’s so 2008. But generally when you throw the words “family” and “secret” together, we think it’s a big coming out story, as in: “I’ve been keeping it a secret that I’m family.” But, yeah, don’t expect her to tell the world she’s gay or anything. “I thought I’d seen it all. But this, my friends, is the miracle of all miracles,” she says in a promo. “I was given some news that literally shook me to my core. This time, I’m the one being reunited. I was keeping a family secret for months, and on Monday you’re going to hear it straight from me.” I knew it: She’s Barack Obama’s Kenyan sister. UPDATE: Oprah revealed her big secret on Jan. 24′s show: She has a half-sister she never knew about who lives in Milwaukee. That’s not the same “half-sister” who told the National Enquirer Oprah gave birth to a baby at age 14, right? The woman, named Bunny, was given up for adoption by Oprah’s mother Vernita Lee. Of course Oprah’s unauthorized biographer Kitty Kelly knew it!