Yung Miami grew up in Opa-locka and became friends with JT through mutual friends. They attended Carol City Middle School in Miami Gardens, Florida. They became close friends and would go to teen clubs in Miami together. Yung Miami's godmother is Trina. Yung Miami's mother has been long time friends with Miami rappers including Trina and Trick Daddy. Her mother is currently in prison and is set to be released in 2021. Her father has also served time in prison. When Yung Miami was 14, her father gave her one of his cars.   
In May 2018, they released their debut studio album, Period. In November 2018, they released their second album titled Girl Code, which features music artists Cardi B, Lil Baby and Jacquees. City Girls contributed with guest vocals to Drake's song "In My Feelings", with Yung Miami appearing in the music video. In August 2018, they released Point Blank Period, a documentary.  
On January 16, 2019, City Girls and Cardi B released the music video for "Twerk".
Since JT was incarcerated at the time, Yung Miami and Cardi B were featured in the video. The music video received over 36 million views in less than two weeks. For the music video, the City Girls issued a challenge asking women to post of videos of themselves twerking. The top 20 were flown out to Miami for the music video shoot, and the winning dancer, DHQUEEN won $25,000.  
On November 27, 2019, City Girls released new lyric video since JT’s release, "You Tried It".
It gained more that 1 million views in a week.
"You Tried It" is two minutes long, and it has a big, heavy, uncluttered DJ Chose beat.
The song is about mercilessly using men for their money.
Yung Miami with her boyfriend, Southside. 
In 2015, Yung Miami detailed multiple instances where Wiggins allegedly punched and yelled obscenities at her. In one case, she claims he ripped her wig off of her head during a tirade. The last, and possibly most violent incident happened in October 2015 when Wiggins allegedly pulled Yung Miami out of a car and repeatedly punched her in the face and head. Police were called during that fight and the rapper claims she was transported to a hospital for facial injuries, which included a contusion to her eye and cuts to her lips and face. 
Yung Miami was later granted a long term protective order against Wiggins, which required him to stay 500 yards away from the rapper, as well as attend a program on domestic violence prevention. Yung Miami also gained sole custody of her son.  In December 2018, Yung Miami started dating Southside, who is a leading record producer from Atlanta. The couple broke up and reunited later in December after Southside bought Yung Miami a brand new 2019 Mercedes-Benz G-Class.   
On August 6, 2019, Miami was shot at as she left a recording studio in Miami.
The shooting comes after Yung's ex, rapper Kodak Black, recorded a song from jail in which he refers to Yung Miami being pregnant with another rapper’s child. Yung and her unborn baby were not injured, but her car was damaged by gunfire.
On June 15, 2020, Yung Miami paid tribute to Jai Wiggins, who died in the beginning of June, with a photo collage featuring their 6-year-old son on Instagram. She wrote:
“Babies 1st words are DADA & that’s what you are a FATHER to Jai.
You & Jai is peanut butter & jelly always together one thing about you, you don’t play about your son!
So humble, quiet & uplifting.
I hate this happen to you Jai you didn’t deserve this!
Jai need you 💔💔”
On June 30, 2020, the premiere of City Girls: The Series debuted and it gave viewers a behind-the-scenes look at a day in the life of Yung Miami.
Titled Yung Miami’s Secret, the series’ first episode follows Yung Miami as she details all the work she put into City Girls while JT was in prison. “Soon as she went away, I did the first tour in all these cities and all these states, making sure JT’s name stayed alive,” Yung Miami said in the episode’s opening. “For all the haters who thought JT being away was going to slow us down, y’all was wrong. When JT gets home, she’s going to be bigger than ever. And they’re going to see that, the superstars that we really is.” 
The episode also highlights the moment Yung Miami told her record label, Quality Control, that she was five months pregnant, a detail she had been keeping under wraps until then. The episode films the emotional moment as she phones Quality Control executive Pierre “P” Thomas and tells him the news. “I’ve got something to tell you,” she says on the phone. “I know that JT’s in jail and I’m supposed to be out here holding down the crew and you and Coach been going so hard making sure we get everything done. I’m pregnant.”
Miami explains why she hid her pregnancy for five months, revealing that she was scared about how people would react and genuinely was unsure of how the group would move forward.
There is also some behind-the-scenes footage of Coach K and P speaking together, saying that they wish Miami would have come to them earlier with the news.
She ends up sitting down with them and discussing how they'll deal with this unexpected occurrence.