US reality TV star Kim Kardashian and Kanye West are reportedly expecting their first child.
The rapper halted his concert at the Ovation Hall at Atlantic City's Revel Resort to ask the crowd of more than 5,000 to congratulate his girlfriend.
In a video posted online by normalmag.com, the rapper stops the music and refers to kim as his "baby momma".
The announcement was followed by congratulatory tweets from members of Kim's family:
Representatives for West and Kardashian are yet to release a statement.
The couple went public about their relationship in March. Kardashian married NBA player Kris Humphries in August 2011 and their divorce is not finalised. Their marriage lasted 72 days.