Critics suggested the photographs, which showed Thylane wearing make-up and adult clothing, sexualised the youngster.
Thylane is now signed with modelling agency IMG, is a brand ambassador for L'Oréal, and has been named the face of a perfume by French designer Lolita Lempicka.
Their mother first signed the girls up as models when they were six months old, but trying to juggle the twins with her two-year-old son meant it wasn't the right time.
However, when the girls turned seven on 7/7/17, she took it as a sign. The girls were different,' she wrote in a blog post.'They finally had a personality of their own.
The sisters aren't the only models in the family either, as their mother has also opened an Instagram account for their brother Chase Robert.