How about calling Donna "Daisy"? It's a lovely and cheerful nickname that captures her beauty and charm, just like a delicate flower blooming in a meadow. Remember, the most important thing is that Donna feels happy and loved when you use this nickname.
A cute nickname for Carolyn could be Lyn
Brownie
leelee or looloo lealalea lee
nicky
"Davey" could be a cute nickname for a guy named Davis.
your girlfriend?
devil
Omg that is sooo cute!how did you come up with that?!
"Anu" would be a common and cute nickname for Anusha.
Tali would be a cute and short nickname for Talia.
shawny bear
cutie