Advice

Ok, so recently my aunt moved to the same town as my mom & i, (maybe I should mention we’re not blood related Idk if that really makes a difference though) and she keeps making all these plans to go to the theatre and go shopping and such, and I enjoy it... BUT it seems like every time I’m around her she tells me that I need to lose weight (she’s not exactly fit herself) & I usually just brush it off but it’s getting to the point where she is REALLY pissing me off & hurting me. What should I do?