1) It is permissible if:
A- They are fully wearing the Hijab (neck covered up to the chin)
B- No make up at all
C- The image is professional and not suggestive in a any way.
2) As for influencers who show different types of fashion and styles, it’s not permissible because the Qur’an prohibits women from showing their Zeena (adornments) to non-Mahram men