I love my girlfriend so much but she's too insecure about herself smh

I love her to death but it gets so annoying when she complains about her ass or her boobs on how their not big enough. I don't see why she doesn't see that she has a man who loves her for her I mean yeah I dated a lot of thick girls before but that doesn't mean she has to impress me or all I like is thick girls cause that's not true. Her body is amazing I hate when she says I'm gonna do squats I don't want her to do squats eat a lot of food cause she can't gain weight she's short she's just naturally tiny. I know she's definitely in love with me she can't get enough I just hate when she's insecure about her body I love her so much anyway she can just stop feeling like this?