As a Titan fan, I’ll shoutout the members of the team who come from royalty/are princesses:
Starfire (Koriand’r / Kory Anders)
Terra (Tara Markov)
Aquagirl (Tula; Prime Earth only)
Ravager (Rose Wilson)
Prysm (Audrey Spears) isn’t a princess, but her nickname was “Princess” during her first 16 years of life, wherein she was plugged into a VR life simulator.