Sex with a new guy!

I just got out of my 2 year engagement. Long story but that’s not why I’m here. I’m plus size and have only been with my ex fiancé. I have a new guy interested in me and he’s keen to hookup as am I. But I’m so anxious as he’s very thin and short and I’m like double his size. We haven’t seen eachother in about 6 months so I’m probably a lot bigger now. What do I do? He would be the second person I would sleep with. I’m so scared he’s going to reject me when he sees me. Thanks 💓