AceShowbiz -

Kanye West is reportedly not the real father of North. According to a recent report by Star magazine, Kim Kardashian used an ex-boyfriend's sperm to get pregnant, and that the 38-year-old rapper would "definitely demand a paternity test."

The magazine alleged that the "Keeping Up with the Kardashians" star wanted to have a child with Kanye shortly after they began dating, but the rapper wasn't ready. As Kim couldn't wait any longer to have a baby, she created a plan and tricked Kanye into believing that she conceived a child with him.

"Kim may have had one of the embryos implanted. She didn't have time to wait for Kanye," an insider told the magazine. The source went on claiming that the couple's friends were a little bit "suspicious" when they heard about Kim's pregnancy in 2012, considering that the two hadn't been together long enough.

"People are speculating that Kim tricked Kanye into believing they conceived in Italy so he wouldn't figure out the real story that she'd already been implanted with an embryo that had another man's DNA!" the source added.

However, Gossip Cop has debunked the rumor, saying that Kanye is 100|percent| North's biological father and that the story is completely untrue.