City Girls

The duo recorded their debut studio track, "Fuck Dat Nigga", which was a diss track towards their ex-boyfriends for not giving them money when they asked.[2] Yung Miami promoted it through social media and by paying DJs to play it in clubs. Soon the track, which features a prominent sample of fellow Florida rapper Khia's "My Neck, My Back (Lick It)", racked up hundreds of thousands of plays.[6] The official music video for the song came out in January 2018 and featured an appearance from rapper Trina. Later that year, the track was included in Quality Control's compilation album, Control the Streets, Volume 1.[2]

Shortly after the release of "Fuck Dat Nigga", JT was arrested and charged with aggravated identity theft, and was sentenced to 24 months in federal prison. The judge eventually agreed to push back her surrender date.[7] JT began her prison term in July 2018 and was set to be released on March 1, 2020.[8] While JT was incarcerated, Yung Miami continued to promote the group's music, by saying: "When she was in jail, I was going to strip clubs and I would pay a DJ 20 dollars to play the song. It started taking off."[6]

After signing to Quality Control Music, the duo were ranked as the most popular developing artists of the week, according to the measuring activity across Billboard charts Hot 100, the Social 50, and Billboard 200.[9] In May 2018, the City Girls released their debut mixtape, Period, which reached No. 16 on Heatseekers Albums the same month.[9][10] Period also ranked 26th on Rolling Stone's 30 Best Hip-Hop Albums of 2018.[11] In July 2018, the duo were launched into mainstream recognition after an uncredited feature on Drake's "In My Feelings", with Yung Miami appearing in the music video.[12][13] In August 2018, they released the documentary, Point Blank Period.[14]

In November 2018, City Girls released their debut studio album, Girl Code, which features vocals from Cardi B, Lil Baby and Jacquees.[15] The album debuted at no. 63 on the Billboard 200 chart issued December 1, 2018.[16] The two singles from the album, "Twerk", featuring fellow rapper Cardi B, and "Act Up", peaked at no. 29 and no. 26 on the Billboard Hot 100, respectively.[17][18][19] JT was transferred to a halfway house on October 8, 2019, 5 months before her scheduled release.

In September 2019, Yung Miami confirmed to Ebro Darden on Apple Music's Beats 1 that the duo planned on recording a new album, expecting to release it early in 2020.[20] On June 19, 2020, City Girls' second studio album, titled City on Lock, leaked in its entirety online.[21] JT announced hours later that the album would be released at midnight of the same day.[22] The album's first single, "Jobs", was released hours before the album alongside a music video.[23] The album includes guest appearances from Yo Gotti, Doja Cat, Lil Durk and Lil Baby. In March 2021, their viral unreleased song "Twerkulator" amassed popularity on social media application TikTok, after 20-year-old dancer Layla Muhammad choreographed a dance for the song. The song had since been used over 1,100,000 times on the platform, with creators such as Charli D'Amelio and Malu Trevejo performing the dance; however, despite this viral restore, the song remained unreleased as the basis contains a sample from "Planet Rock" by Afrika Bambaataa and Soulsonic Force, which was yet to be cleared.[24][25] On May 21, 2021, "Twerkulator" was officially released.[26] On October 29, 2021, Yung Miami released her debut solo single, "Rap Freaks", alongside its music video. A sex-positive track, it sees her reference various rappers, including Megan Thee Stallion, Diddy, and Meek Mill. Miami explained that "the song is showing love to all the rappers right now, it's nothing personal. I [named] a bunch of the guys who are on top, that's hot, that's poppin'. Nothing is personal, nothing is literal, I'm just having fun".[27] The song debuted and peaked at 81 on Billboard Hot 100, becoming Miami's first entry as a solo artist.[28]

Yung Miami is the mother of a son born 2013 and daughter born 2019. Her son's father was fatally shot in 2020.[31][32] Her daughter's father is record producer Southside.[33][34]

On August 6, 2019, Yung Miami was the victim of a drive-by shooting after leaving Circle House Studios in Miami. An unknown assailant inside a car with no lights on attempted to fire shots into her vehicle, striking her red Mercedes-Benz G-Class in the spare tire. She was not injured.[35]

Shortly after the release of their 2017 debut single, "Fuck Dat Nigga", JT was arrested and convicted of aggravated identity theft on fraudulent credit card charges, and was sentenced to 24 months in federal prison. Following a pushback of her surrender date, JT turned herself in to the authorities on June 29, 2018, and began serving her sentence while being held at FCI Tallahassee in July 2018.[8] She was slated to be released March 21, 2020.[8] As she awaited her release, JT was transferred from FCI Tallahassee to a halfway house in Atlanta on October 8.[36] During her stay in the halfway house, she was able to leave the house during the day to work and visit family and friends.[36] To celebrate her release, JT released a track titled "JT First Day Out".[20] On the song, she shouts out Yung Miami, rapping,

"I been a real bitch way before the fed case / Yung Miami held me down, that's a bitch ace / And if a bitch try her, it's a cold case".[20]

A few celebrities showed to be displeased with the incarceration of the artist: Trina wore a T-shirt that had "Free JT" written on it, and Drake posted on Instagram "Free my shorty".[8] JT was officially released from federal custody on March 7, 2020.[37]

In 2013, Yung Miami stated that she would not want one of her sons to be gay and would beat him if she found out that he was.[38] In August 2018, Yung Miami was among several rappers who faced criticism after the circulation of tweets she had written in the past that contained homophobic remarks.[39] Following the resurfacing of her statements, Yung Miami publicly issued a formal apology through an Instagram post.[38]

Though she apologized, Yung Miami found herself embroiled in controversy once more on November 13 when she doubled down on her homophobic statements in an appearance on Power 105.1's radio show The Breakfast Club.[38] During the interview, she was questioned by radio host Charlamagne tha God in regard to her controversial tweet that claimed what she would do if she found out that her son was gay. Yung Miami replied that her previous tweet had nothing to do with the LGBTQ community and was specifically about her son. She said, "I was just talking about my son. I just said that if I saw anything gay in my son, that I would beat him".[38] The rapper attempted to provide clarity for what she had actually meant. She elaborated, "But that's just like when your mama be like, 'If you break my table I'm gonna beat the shit out of you.' That don't mean she's gonna beat the shit out of you, she's just saying it."[40] While she stood by her comment that as a mother she does not want a gay son, Yung Miami insisted that she does not harbor any resentment towards gay people. She explained that she spends much time around many gay people, including her cousin and hairstylist.[40]

Commentators throughout social media immediately decried the rapper, saying that her very line of reasoning was homophobic and the comments she made on The Breakfast Club were hateful and anti-LGBTQ.[38] It was also emphasized that such corporal punishment is still in practice among some parents who condemn their children's sexual orientation.[41]