Congratulations to Beyonce& Jay-Z, on the arrival of their newborn baby girl 'Ivy Blue Carter'. But, friends of the couple have confirmed that the newborn is acually called 'Blue Ivy'. She is already trending allover Twitter and Rihanna has tweeted, 'Welcome to the world princess Carter! Love Aunty Rih'. Celebrities like fellow Destiny's Child bandmate Michelle Williams has said Beyonce's baby will be 'Gifted'- Lady Gaga has also gushed that Beyonce will be a great mum.