A Polish woman who previously claimed she’s missing child Madeleine McCann has doubled down on her theory following the results of a new DNA test, RadarOnline.com can reveal.

Julia Wandelt claimed the results “strongly support” her claims she’s Kate and Gerry McCann‘s daughter, who went missing while on a family vacation in Portugal in May 2007.

Wandelt first began pushing her McCann theory on Instagram in 2023, eventually catching the attention of the missing girl’s parents.

A previous DNA test revealed Wandelt had Polish, Lithuanian and Romanian heritage, which differed from the McCann’s ancestry. In other words, the test disproved her claims.

While she apologized to the McCanns in 2024 and said she “regretted” coming forward with her theory, she’s now doubled down on her claims following new testing.

Last week, Wandelt returned to social media with a new Instagram account, @amijuliawandelt. Her bio read: “I know the truth and I will never give up.”

In a series of posts, the 23-year-old claimed she had “results” from a new DNA test analyzed by a “highly respected and recognized world expert, Dr. Monte Miller.”

She alleged the expert compared the DNA she submitted to the crime scene after Madeleine’s disappearance and claimed they matched the missing toddler’s eyes, teeth and voice.

In follow-up posts, Wandelt referred to Kate and Gerry as “my parents,” then she insisted the “actual dna results show that I am part British, part Irish.”

She shared another screenshot from Miller’s testing which stated the results “strongly supports that Gerry McCann could be Julia Wandelt’s biological father, as the data aligns perfectly with a parent-child relationship.”

The post continued: “If this analysis is accurate and properly derived from their DNA samples, the relationship between McCann and Julia Wandelt is biologically consistent with that of a father and daughter.”

However, Kate and Gerry were said to have “refused” to participate in the fresh test.

According to Miller, her DNA were a “perfect match” to samples taken from the crime scene after the British toddler went missing.

The expert claimed they came to the conclusion after analyzing “hair obtained from the floor of the crime scene in Portugal” and “saliva obtained from the bed quilt at the scene.”

They alleged the rest resulted in a 69.23 percent match, which “suggests a biological connection between the two individuals.”

In addition to DNA testing shared on her profile, Wandelt also took to Instagram stories to share side-by-side images of herself and Gerry. Wandelt seemingly attempted to show similarities in her facial features and Gerry’s, including their nose and smile.

She additionally shared images of her own family members – including her grandfather and “polish mother” – and police sketches of potential suspects in the McCann case.

The images featured a man with arched eyebrows and a mustache, as well as a woman with short black hair and a long, thin nose.