American singer Beyonce finally delivered her and Jay-Z’s twins last week at a Los Angeles medical centre, but the official date of birth is still not disclosed.

As of press time, Beyonce and the twins are still in the hospital for a ‘minor issue’.

Meanwhile, sources say the babies’ genders are boy and girl. Beyonce’s father, Mathew Knowles, already posted his congratulations to daughter and Jay-Z on Instagram and Twitter.

The twins are the latest addition to Beyonce and Jay-Z’s family. In 2008, the married couple had their first baby—Blue Ivy.