If you are speaking to a friend (this is not the thing you say to a judge or your bank-manager):
sois ma princesse!
une princesse
a prince = un princea princess = une princesse
Those letters spell princess.
A beautiful princess is 'une belle princesse' in French.
In English it is grammatical to say "You are a beautiful princess".
Tiana from The Princess and the Frog.
"Princess" in Hawaiian is spelled "Kaikamahine Ali'i."
Prinsesse.
Prinzessin
Princesa
prinsessa.
princsoo