Self conscious

I said yes to the dress and I LOVE my dress! I still have to get the bottom, chest, and sleeves hemmed but the only problem i have is I feel like I look...too chunky for this form fitting dress. I used to have an eating disorder so I have a really hard time with my self image. I’m working on eating better and working out while trying to stay healthy looking. What are your thoughts?
(Attached are photos of me in my dress-sorry about the messy bedroom- and a fur shawl I’ll be wearing)