Beyonce and Jay-Z have reportedly named their newborn twins, Rumi and Sir Carter, a source confirmed the news to magazine Us Weekly.

The couple, who are already parents to 5-year-old Blue Ivy, welcomed their second daughter and first son on June 12.

The twins were born at Los Angeles's Ronald Reagan UCLA Medical Center, where Beyonce had an entire floor reserved to ensure privacy.

However, the pair is yet to publicly confirm or comment on the birth of their newborns.

Beyonce's father, Mathew Knowles, was the first to announce the news on June 18, with a sweet Instagram post wishing the twins happy birthday.

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