Beyoncé and Jay-Z welcome baby girl and name her Blue Ivy Carter

Beyoncé Knowles and Jay-Z have welcomed their first child - a baby girl named Blue Ivy Carter.
The 30-year-old singer's daughter arrived via scheduled caesarean section at Lenox Hill Hospital in New York City last night.Celebrities have already started tweeting their congratulations to the couple, including hip-hop mogul Russell Simmons and Rihanna.

Within hours of baby Blue's reported arrival, one fan started up a parody Twitter account called @IvyBlueCarter, with a digitally-created image of what the baby could look like.