Feeling insecure

Hey y'all so I got tinder and I matched with this guy who is really attractive. he wants to meet up but I'm so scared he's gonna see me and think I'm unattractive. he's only seen pictures and I always have this fear that I look different in them than I do in real life. the problem is I have some chub. I'm not one of those skinny girls. he is tall and slim. i just feel he's so much more attractive than me and I'm scared of getting rejected. I was a little nosy rosy and looked through his Instagram and there was some pictures of a girl who I'm assuming was his girlfriend (they were like 2 year old pictures) but she was really skinny and pretty. idk I need some advice