My beautiful wife is Meine wunderschöne Frau in German
Prinzessin
petite princesse
"Say hello to my little friend" is "Hallo zu sagen, mein kleiner freund" in German.
my ugly darling
Klein (e)
schwesterchen
English: "the princess" = German: "die Prinzessin".
Sehr klein.
kleine Fee
English: "little sparrow" is German: "kleiner Spatz".
My Little girl = Mein kleines Mädchen
It's banphrionsa beag.