They revealed "they/she/he" in a series of TikTok and Instagram posts and hinted at family struggles having allegedly not been told enough about their biological father.
In , Stevie appeared upset and wrote the words: "He's not your real dad. You're adopted. No he is my real dad. You're my real dad right? Am I adopted?
"I am your real dad. *gets sent an article of my biological dads death and shows my grandma," adding, "I'm sorry they wouldn't tell you about him."
The video shows Stevie with short hair wearing thick rimmed glasses with a gray hooded sweatshirt pulled up over their head as they sit in bed.
Stevie mouths the lyrics to Adventure Time's Remember You in the clip, featuring the words: "Marceline, is it just you and me in the wreckage of the world? That must be so confusing for a little girl."
The Sun has reached out to Stevie and Eminem's rep for comment, but did not receive a response.
Stevie's biological father is Kim's ex-boyfriend, Eric Hartter, who she got together with during a break from , and the superstar adopted the child in 2005 after he and Kim reconciled.
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Kim and Eminem, 48, first tied the knot in 1999 and divorced two years later. They but had split again by April of that year.
Hartter, a professional tattoo artist, had various run-ins with the law and was in and out of prison as he reportedly battled drug addiction.
He died in 2019 aged 40, , from a suspected overdose.
A source close to the family claimed he had recently been abusing heroin.
The Sun has reached out to Wayne County Medical Examiner’s Office for further comment.
According to social media posts seen by The Sun, Eric had other children with a woman named Sara Hubbard, who paid tribute to him on Facebook.
She wrote: "My heart is broken into a million pieces. My family has been hit so hard.
"We have lost so many people that meant everything to us. I lost Eric Hartter a couple days ago. I never wanted this day to come, Eric is a huge part of me and our children.
"Anyone that knows Eric knows that he's always battled w demons. Anyone that knows Eric knows how phenomenal he was too in so many ways. [sic]
"I love Eric w every ounce of me he was my best friend no matter what! Eric has made some sh***y choices in life but who hasn't! I have yet to meet a perfect person."
Hartter had a long rap sheet, with crimes including a felony contraband involving Fentanyl and methamphetamine, to which he pleaded guilty and served time.
Stevie's social media accounts were flooded with positive comments after they came out as non-binary, and they have had support from their family.
In one post, they wrote out their pronouns, telling followers: "call me stevie (they/she/he)," which was liked by , Eminem's biological daughter with Kim.
A video also shows their transformation over the years, with the words: "Watch me become more comfortable with myself," and "forever growing and changing."
TROUBLED FAMILY LIFE
They used the hashtags #genderfluid #bi and #nonbinary in several posts.
raised his child, along with Hailie, now 25, and , 28, whose mother is Kim's late twin sister Dawn who died of a drug overdose in 2016.
In his song Going Through Changes, Eminem raps: "Hailie, this one is for you, Whitney and Alaina too / I still love your mother, that'll never change."
The TikTok post about their biological dad was shared just days ago, following the death of their beloved grandmother, Kathleen Sluck, who passed away aged 65 following a long period of ill health.
Stevie's name was referenced in an obituary late last month, which read: "Kathleen was a exceptional mom to her two daughters; Kim and Dawn; and was overjoyed to become a grandmother to her grandchildren; Alaina, Adam, Hailie, Stevie, P.J., and Parker."
The Sun obtained Kathy's death certificate, which shows she was pronounced dead at 6.40pm on July 23 at Henry Ford Macomb Hospital in Clinton Township.
Her death was listed as "natural" due to septic shock, pneumonia and chronic obstructive pulmonary disease (COPD), while congestive heart failure also a contributing factor.
The document shows she was living with her daughter Kim and grandchildren before her death on 22 Mile Road, which was reportedly built by Eminem.
She was cremated following a funeral attended by family and friends.
The Sun reported left Stevie's mom heartbroken and she allegedly tried to take her own life just a day after her funeral on July 30, according to TMZ.
Cops rushed to the 46-year-old's home in Macomb, on July 30 and she was allegedly combative when police arrived and had to be restrained by deputies, according to law enforcement sources.
Paramedics were unable to check her vitals, the outlet reported.
A police report, obtained by , said she was sitting on her bathroom floor holding an "unidentified object" and had a "large amount of smeared blood" from "deep lacerations on legs".
She had "difficulty speaking, was slurring her speech and later fluctuated in various levels of consciousness," the report said.
It added that there was a small cardboard shipping box filled with "haphazard messages" written out to to her family members, including a "do not resuscitate" request.
HEARTBROKEN MOM
Kim was reportedly transported to the hospital for both medical and psychological evaluation, before returning home for recovery.
A user claiming to be Kim previously posted an emotional comment on mom Kathy's online tribute page, writing: "I don't even know where to begin mom!!! First off I’d like to say I F****** LIED TO YOU WHEN I SAID I WOULD BE OK….I LIED WHEN I SAID I CAN DO THIS I PROMISE!!!! F***** f*** all!!!
"I don’t even know how to do this without you I just wanted you to not hurt or suffer or fight for me anymore!!! But I’m sure you know that!!!
"You’ve been the support and back bone for me and my kids and I can’t thank you enough.
"You've taught me how to be a fighter and not take s**t and tried to teach me to love myself as much as you loved me!! You’ve be there for every fall I’ve had and BOY WAS THERE A LOT!!!
"You’ve taught my kids how to love and respect others and also how to be just as crazy as us when needed.
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"We’ve had our riffs but not one second of one day would I not have given my last breath for you. Even now I’d rather it be me than you!!! You’re all I had left momma!!! What do I do now??
"How can I go crazy anymore without you here to be the strength and kick in the a** I need to get better???! I hope you know how f****** much I love the sh** out of you and how much the kids love you!!! I hope you know every choice I made was to make you a little happier and your life a little easier!!!"