Writing on Twitter, the star said that they spontaneously made the decision to marry one morning last September and she got married with "no dress no makeup and no ring". Culture is the name of Migos' wildly successful 2017 album. This is her first child and Offset's fourth.
Cardi plans to resume her tour with Bruno Mars, with Kulture in tow.
The birth came just weeks after Cardi B confirmed in a statement that she and Offset, 26, had been secretly married in September.
The baby's arrival comes just weeks after news broke that the couple have been secretly married for almost a year.
'Reckless': Trump escalates trade war with another $US200b in Chinese tariffs
The official added that China has warned the USA that future actions would be met with "economic attacks" on American markets. Proposed tariffs on another US$200 billion of Chinese imports have been rolled out with Beijing vowing to retaliate.
The rapper took to social media to announce the big news - she is now a mother!
Cardi B and Offset kept the rapper's pregnancy under wraps for months, finally revealing her baby bump during a "Saturday Night Live" performance in April. TMZ published receipts after finding a marriage certificate for the rappers on file at the Fulton County Courthouse in Atlanta under their birth names.
Offset proudly announced to the world on July 11 that his daughter with Cardi B had arrived. "My sh*t is going to start at 9 p.m. because that's how I celebrate, that's how Caribbean people celebrate", she said. The Migos member has two sons, Jordan and Kody, and a daughter, Kalea, from previous relationships. Well now since you lil nosey f**ks know at least ya can stop saying I had a baby out of wedlock'.