Cardi B is celebrating a major milestone for her youngest child, and she's finally sharing his name with the world!
The Grammy-winning rapper marked her baby boy's first birthday on November 4 with a heartfelt Instagram tribute, revealing that her son's name is Grey M.D. The special birthday post also included photos celebrating her little one, giving fans another glimpse into her life as a mother of four.
© @iamcardibBut it was Cardi's emotional message about pregnancy, motherhood, and finding strength during one of the most uncertain periods of her life that made the occasion especially personal.
Cardi B Reveals Her Son's Name, Grey M.D., in Emotional Birthday Post
After keeping her youngest son's name private for nearly a year, Cardi B chose his first birthday to make the big reveal. The "Bodak Yellow" rapper shared a touching message reflecting on how much her baby boy has changed her life since his arrival in November 2025.
In her Instagram caption, Cardi wrote: "Happy 1st birthday to Grey M.D🩶🩶🩶!!It’s only been 1 year since meeting you but it feels like I’ve had you at my side forever. I carried you through one of the most uncertain high pressured times of my life but having you inside of me through it all gave me a extra strength . I was growing you inside of me and at the same time you were giving me life! You gave a new meaning to what a Grey day feels like. You light up my life and every room with your smile your laugh and your precious spirit."
Her clever reference to a "Grey day" also gave her son's unique name a special meaning. For Cardi, Grey represents happiness, light, and the kind of love that can make even the hardest days feel brighter.
Cardi B Shares Birthday Photos of Her Baby Boy
Along with revealing Grey M.D.'s name, Cardi celebrated his first birthday with photos shared on Instagram. The birthday tribute marks another special moment in the rapper's journey of introducing her youngest child to the public.
Cardi previously shared her first photos with her newborn son on November 19, 2025, just weeks after giving birth. Those images featured the rapper cradling her baby in a nursery while he wore a New England Patriots outfit, a nod to his father, NFL player Stefon Diggs.
Another photo captured Cardi, Diggs, and their newborn together in the hospital, although the baby's face was blurred at the time.
The original post revealed his November 4 birth date but kept his name a mystery. Now, one year later, Cardi's birthday tribute has finally answered one of the biggest questions surrounding her youngest child: What did she name him?
Who Is Cardi B's Son Grey M.D.?
Grey M.D. is Cardi B's fourth child and her first with NFL wide receiver Stefon Diggs. The rapper welcomed her baby boy on November 4, 2025, although she waited until November 13 to publicly announce his arrival.
At the time, Cardi was entering a new chapter that included motherhood, new music, and preparations for her next tour. She had announced her pregnancy during a September 2025 appearance on CBS Mornings, where she spoke about feeling strong and empowered while balancing her professional commitments with pregnancy.
© Cardi BThe following month, Diggs confirmed they were expecting a boy while attending the CFDA Fashion Awards. After Grey's birth, Cardi's representative confirmed that the rapper and her newborn were doing well.
Cardi B Reflects on Finding Strength During Pregnancy
One of the most revealing parts of Cardi's first birthday message was her reflection on the emotional challenges she experienced while pregnant. Rather than focusing only on the excitement of welcoming another baby, the rapper acknowledged that she had been navigating an uncertain and high-pressure period.
She described how her unborn son became a source of strength while she was carrying him.
© The Grosby GroupIn September 2025, she released her long-awaited sophomore album, Am I the Drama?, while preparing to welcome her fourth child. She was also navigating a new relationship and a changing family dynamic following her separation from Offset.
Throughout those transitions, Cardi continued to speak openly about her determination to grow personally and professionally while providing the best possible life for her children.
How Many Children Does Cardi B Have?
Cardi B is a proud mother of four children: Kulture, Wave, Blossom, and Grey M.D. She shares her three older children with estranged husband Offset, whose real name is Kiari Cephus.
Her eldest daughter, Kulture Kiari Cephus, was born in July 2018, followed by son Wave Set Cephus in September 2021. Her second daughter, Blossom, arrived in September 2024. Grey, born in November 2025, is the youngest member of the family and Cardi's second son.
Over the years, Cardi has frequently shared glimpses of motherhood on social media, from elaborate birthday celebrations to everyday family moments. Despite her larger-than-life stage persona, she has consistently made it clear that her children are among her biggest priorities.
