What to wear to the gym with my friend

I’m going to be going to the gym soon with my friend. And in the past she has made comments on my body and how I’m skinnier than her and therefore prettier (I don’t agree with that logic, it’s just what she said).

I know body image is something she’s working on. But basically I feel like if I go to the gym with her I should wear a baggy t shirt and leggings instead of leggings and a sports bra like I normally do so she doesn’t feel the need to make those comments.

I know some of you guys are gonna say I should wear what I want, and I have that mindset too. But this is a friend I care about and want to help at the gym and don’t want her to feel any way (she’s always very up front on how she feels so I know what to expect)

I’m not super thin but I know I am thin. I’m working on gaining wait at the gym, but she just will always make a little comment on how I’m dressed sometimes. Because gym or not I often wear crop tops and stuff and she says how she can never pull off those clothes (which I highly disagree with)

So ya basically - would it be best to wear baggier clothes at the beginning with her? Or should I just wear my sports bra like normal?