A Canadian model is claiming that she has slept with Kanye West while he's dating his baby mama Kim Kardashian. Leyla Ghobadi alleges that the hip-hop star revealed to her that his relationship with Kim was "just for publicity" and to "increase his fan base."

Talking to Star magazine, the 24-year-old Kim-lookalike said that her fling with Kanye started on July 6 last year when she attended his concert in Atlantic City. Kim was present at the gig, but that apparently didn't stop Kanye from instructing a member of his entourage to seek the model out and invite her backstage.

He then allegedly invited Leyla for cocktails before asking her to come back to his hotel room. And although she was concerned that he was seeing Kim, Kanye assured her that "his relationship with Kim was nothing but a friendship, a way to increase his fan base."

"We began to make out for a while - and next thing I knew, we were both naked and having sex," Leyla told the U.S. magazine.

They also met and slept together in October in New York.

Leyla added that the rapper contacted her just last weekend for a meet-up, but since she was already aware of Kim's pregnancy, she declined.

Kanye and Kim announced that they're expecting a baby in December after dating for eight months.

"This is going to destroy the Kardashian family. It's bad. It's really bad. It's just embarrassing. But if I were Kim and about to have a baby, I would want to know," Leyla justified her reason for coming out with Kanye's alleged infidelity with her.

Both the rapper and the reality show star have denied the other woman's allegations.

"This most recent attack on Kanye West and his family is totally without merit. It's a blatant attempt by a misguided individual who is clearly seeking publicity, and another in a series of malicious stories drummed up by non-credible 'news' sources," his rep has been quoted by TMZ as saying.

"This is a sad attempt to hurt two people trying to live their lives."