How can I get that hollow cheek look? Fillers? (photos)

Volume and contouring of the face can be improved with well-placed fillers (Voluma, Radiesse, Bellafill) and Sculptra. Fat or implants are alternatives. I recommend getting a formal evaluation with a facial sculpting expert. Best, Dr. Emer

Hello,
By looking at your pictures, I would say that by increasing the convexity of your upper cheeks, you will experience a relative "hollowing" of the mid and lower cheek beneath.  This is referred to as the "ogee" which is the double S-shaped curve many desire.
Dr. Peter Malouf

You can achieve this with augmenting your cheek bones or hollowing out your cheeks.  The latter is done by reducing the buccal fat pad with an in-office intra-oral procedure.  Computerized imaging may help you decide.  Seek out a consultation with a board-certified surgeon.  Best wishes.