Traditionally a princess is the daughter of royalty or possibly the spouse of a prince.
On Barrayar, a princess was the daughter of an emperor or a daughter of the son of an emperor or the wife of the son of an emperor.
- Olivia Vorbarra Vorkosigan, daughter of Prince Xav Vorbarra
- Sonia Vorbarra Vorpatril, daughter of Prince Xav Vorbarra
- Kareen Vorbarra, wife of Prince Serg Vorbarra