During an Instagram Q&A, a follower asked Sunny, "Are you and Levi going to be on Teen Mom?"
She responded, "Yes."
When another follower asked if she's the new cast member, she responded, "Nope! Never been a teen mom. Hubby was a teen dad though."
Palin, 27, confirmed in July that she's joining the MTV series after Farrah Abraham's firing.
"I am excited to join MTV's Teen Mom OG," she captioned a photo with her three children and the camera crew. "I look forward to sharing my experiences and hope that I can help others on their journey."
Palin has had a tumultuous relationship with her baby daddy.
They split in March 2009. After over a year of public feuding, they announced that the wedding is back on. But on the same day of the announcement, he told her he might have gotten another woman pregnant.
"There's been no remorse," she told People in an interview. "The final straw was him flying to Hollywood for what he told me was to see some hunting show, but come to find out it was that music video mocking my family. He's just obsessed with the limelight and I got played."
The two were then involved in a nasty custody battle.
When it was over in 2016, Johnston, 27, posted on Facebook, "I'm so happy to have my son in my life, and to put all of this back and forth in the courts behind me. It might have taken me 7 years and cost me around $100,000 in lawyer fees, spread out among 3 different lawyers, as well as a lot of patience, but it was all worth it. I'm happy now to be successfully co-parenting."
Johnston is currently married to Sunny, who he shares daughters Breeze and Indy with.
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