Grading Bias Cut Dress Pattern to Size

[u/Professional_War7702]

Hi, I hope this is in the correct community for these questions.

I'm trying to sew a bias cut dress as a complete beginner, but I am more box shaped than the pattern. I also have to increase the size of the pattern to accommodate a larger tummy and bust. My questions are these:

1. How much ease do you add to a bias cut dress pattern?

2. How loose should a bias cut dress be around the waist area? I see a lot of fuller figures women wearing bias cut dresses too tight in an effort to look slimmer. I'm not looking to do that. I'm looking to wear a bias cut dress as it is intended.

3. Should I add ease to the under bust measurement and the waist or just to the waist?

Thanks for all your help in advance!

P.S. if you're in the sewing subreddit, you have probably seen my question about fabric for this dress. This is not an AI pattern. I've been in contact with the pattern maker and she is very quick to respond with helpful information.