beyoncejayztwinsgraziaImage: Getty

The names of Beyonce and Jay Z’s twins have been revealed after the couple registered trademarks for their new additions.

As TMZ reports, Beyonce and Jay Z have trademarked the names Rumi Carter and Sir Carter, filing the paperwork this week.

Rumi could be a reference to the 13th century Persian poet, and as for Sir, well it just sounds badass, no?

Earlier this year they registered a trademark for their five-year-old daughter Blue Ivy.

Beyonce and Jay Z are yet to officially announced the birth of the twins, who were born on June 12, although her father Mathew Knowles posted about their birth on his Instagram account.

The babies were reportedly born prematurely and suffering from jaundice, but after some special care in the hospital they’re now believed to be at home with the Carters in a Malibu mansion the family has rented for the next few months.

On Friday, Jay Z dropped new album 4:44, and admits to cheating on Beyonce in the lyrics. He also refers to his infamous elevator fight with Solange and responds to Beyonce’s Sorry lyric about ‘Becky with the good hair’.