Grace or Gracie ?

Grace. It's timeless, elegant and professional and will suit her at all ages. You can still use Gracie as a nickname but I doubt she'll want to be known as Gracie in the office when she's 50. 

Grace. Gracie can be a nickname, but she won't want to go by it when she's older.

They both make me wanna barf.

Grace as a formal name. Gracie is more of a nickname.

Grace.  She can use Gracie as a nickname if she wants.

Depends upon  many things. . . 

1) Which do you like better?

2) What is the last name that goes with it?  With some last names, a one syllable first name sounds better.  With other last names, a two syllable first name sounds better.

3) What is the level of formality of your family.  Grace sounds considerably more formal than Gracie.

Hope this  helps!

I have a grand daughter named Grace, but we call her Gracie ... .........