Sunny Suzannah?

[lilysong]

Sunny is very cute, but she would have to turn out to be a happy child, otherwise it would be a stretch. People tended to call me Susie when I was little, and then I "graduated" to Su... but I prefer using my full name (Susanne). A friend of mine goes by Suz. I really like Zuzu.

[stephlove]

I think it's really cute. I have a Daisy Susannah and we very often call her ZsaZsa.

[amenspanglish]

I actually like Susie, for school and what not.
But I love Sunny for at home. Does that make sense?

[saracita00]

ZuZu is my favorite Susannah nn but Sunny is adorable. Never would have thought of that! I say go for it!

[svea]

Love Sunny as a nn for Susannah

[boyandgirl]

I would call her Susannah. I don't like nicknames. Use that beautiful name you picked!

[theatrenut23]

I love Sunny, and also the suggestion of Sukie.Both very adorable nicknames for Suzannah.
Good luck!