Beyonce’s baby ‘most beautiful girl in the world’, says aunt Solange

Beyonce gave birth to a baby daughter on Sunday, and the star’s sister already calls her niece, ‘the most beautiful girl in the world’.

An observer at NYC’s Lenox Hill Hospital was quoted as saying that Beyonce’s husband Jay-Z, was spotted walking the hospital halls on Saturday morning looking ‘happy’.

The singer’s family members — sister Solange, parents Tina and Mathew Knowles — were also spotted at the facility with “flowers with pink balloons and silver and black ribbons,” Us magazine quoted the observer as saying.

The new aunt, Solange Knowles, tweeted her excitement on “the most beautiful girl in the world”.

Gwyneth Paltrow and Rihanna also took to Twitter to congratulate the new parents on their girl, reportedly named Blue Ivy Carter.

“Welcome to the world, Blue.. We love you already!” Paltrow tweeted.

“Welcome to the world princess Carter! Love Aunty Rih,” Rihanna said in a tweet.