(CNN) A German Instagram influencer has been sentenced to four years in prison for conducting illegal beauty treatments.

Michael Rehaag, a spokesperson at the district court in Bochum, told CNN the 29-year-old woman confessed to injecting hyaluronic acid as "filler" into the lips and noses of at least 35 women.

The pregnant social media star, who cannot be named under German privacy law, had 100,000 Instagram followers, Rehaag told CNN.

She used the social media platform to advertise her services between 2017 and April 2019, charging between 300 and 450 Euros ($330 to $495) for the injections, which she initially carried out in her living room.

Later, treatments were carried out in hotel suites "where one room was used as a treatment room and the other as a waiting room for clients," Rehaag said.

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