Kylie Jenner has been dressing sexier ever since rumors leaked of her boyfriend cheating on her with transgender model Mia Isabella.

The 17-year-old reality TV star is trying to keep her 26-year-old rapper boyfriend "in check" after he made headlines for sleeping with the porn star, Hollywood Life reports.

"Since an early age, she's been inundated with messages that 'sexier is better' and dating someone like Tyga just compounds this distorted belief that 'looks are everything'," a source tells the magazine.

"She's been feeling insecure and her way of combatting that is by dressing sexier and sexier. It's actually really sad that she feels like she has to dress this way in order to keep Tyga in check," the source continues.

Meanwhile, the 17-year-old "Keeping Up With the Kardashians" star recently graduated from high school. She took to Twitter to share the news on Monday.

"...I finished school last week.. and I know I never post on social media when I'm in class but that doesn't mean.. I don't encourage education! Because I do," Jenner tweeted.

The young star has been leaning on her big sister Khloe Kardashian to help her get through the cheating rumors and fights with Tyga's ex-girlfriend and the mother of his child, Blac Chyna.

At the same time, Jenner often feels like her family is too busy with their own lives to help her sort out her own issues.

"Kylie is young and wants attention, especially attention from her parents who are both too self-involved to really be there for her," a source tells Hollywood Life. "So she gets attention from the social media, from wearing the kinds of outfits she wears."

Yet, reports say that Kylie does not believe the rumors about Tyga and Isabella. Instead, she believes that whoever is behind the cheating rumors are "out for Tyga's money."

Either way, she's flaunting her sexy look while promoting education.

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