Late last night a star was born.

No, really. Beyonce and Jay-Z welcomed an infant daughter, Blue Ivy Carter on December 8th.

The 30-year-old singer’s daughter arrived via scheduled caesarean section at Lenox Hill Hospital in New York City last night.

The Daily Mail went into details about the origin of the unusual baby name.

The baby’s middle name Ivy may be in reference to Beyoncé and Jay-Z’s love of the number 4. They married on April 4, 2008, Beyoncé‘s latest album is called 4 and the couple have matching tattoos of the roman numeral for 4 – IV – on their wedding fingers.

Beyoncé and Jay-Z were also born on September 4 and December 4 respectively.

Regarding Blue, Jay-Z has a trilogy of albums with the word in the title. The Blueprint was released in 2001 around the time he got together with Beyoncé, The Blueprint2: The Gift & The Curse came out in 2002 and The Blueprint 3 in 2009.

Celebrity friends also tweeted their well-wishes to the new parents.

and her sister Solange showed her love.

Congratulations to the new parents.