Tyga and Kylie have been dating now for more than three years - but recently a few things have changed. One thing that's changed is that Tyga hired a pretty young assistant named Katherine Levchenko.
Some women would be a little INTIMIDATED having their boyfriend hire an aspiring model as an assistant. But Kylie seems unbothered. Here are some of Katherine's pics:
According to her bio, Katherine attended Pepperdine Business School.