The reality television star Kim Kardashian has given birth to a girl, her first child with the rapper Kanye West.

Magazines in the US have posted the story online, citing unnamed sources confirming the birth of the couple's daughter.

Kim is thought to have given birth on Saturday, earlier than her expected due date, in a hospital in Los Angeles.

Representatives for the couple have yet to make a comment on the news.

Kanye West and Kim Kardashian began dating last year, after she split from her husband, the basketball player Kris Humphries in 2011. Their marriage lasted 72 days.