The rapper took to social media to announce the big news - she is now a mother!
Cardi B has announced the arrival of her first child - daughter Kulture Kiari Cephus.
The 25-year-old also revealed that her partner had chosen the name.
The couple was secretly married last September. The news came out after Offset thanked his wife at the BET Awards.
News of their secret marriage only broke in June after TMZ released the duo's marriage certificate.
England aim to join France in World Cup final
"The Englishman says, "hey, we are playing Croatia tonight" and the Frenchman replies: "So are we - on Sunday". He's been showing season in, season out that he's one of the best strikers in the Premier League.
The Migos won for Best Group and Offset let the cat out of the bag when he said: "I thank my wife".
She added that they had woken up one morning and "decided to get married". Well, it was recently revealed that they were actually already married when he proposed.
Cardi B confirmed in June that she had married partner Offset in September previous year. Well now since you lil nosey f**ks know at least ya can stop saying I had a baby out of wedlock'. Some fans wondered why the baby's name didn't start with a "B" - Cardi's preferred consonant - and made comparisons to the Kardashian family's penchant for "K" names. The publication says Shaft was trying to "protect" her from Offset who charged her $50,000 for his work on her song "Lick".
Now that little Kulture is here, we wish her and her parents all the best of luck. Sh*t, I might even drink some red wine.