Should his mom have a say in what I wear to his house? READ PLEASE

So my boyfriend and I are 16 and I literally wear the exact same thing when I am not a school, nike shorts and a huge t-shirt. So every week or two we have a movie night where we get together (sometimes with our families) and watch a movie or two.

Anyway, I was in my normal outfit, and i walk in the door with chacos on (if you do not know what chacos are they are sandals) and his mom kinda hates the outfit but she loves me and we have been dating for 4 years, so she goes “hi sarah, jacob is just upstairs” so i go up and i hear her tell my boyfriends dad “will that girl ever wear another outfit combination?”

this kind of hurt me but i go up anyway. so sometimes we have a friend of his brother or sister come over too (i am friends with them) and the friend accidentally spilled some orange fanta on my white shirt.

so jacob (my boyfriend) brings me into his room to find a shirt for me to wear. we kiss a lot then we realized that his parents and siblings were probably waiting, so i come out in one of his old baseball team shirts. jacob is really tall and i am literally 5’3 so the shirt was bigger than my normal shirt i was in. well his mom and dad think we had had sex because i came out in one of his shirts (not the first time they had thought that)

so we just kind of got onto the couch and got all cuddled up and comfy for the entire movie. then once his brother and sister go to bed it’s just me, jacob, and his parents. and his mom asks “sarah are you always going to dress like that when you come here?”

and i was nice and replied “ma’am is there a problem with my outfit”

then she says “honey it’s just you came down in one of jacobs shirts”

and i said “is there ay issue with that”

then his dad chimes in saying “she wants to know if y’all had sex up there because sarah you look like you did because it’s his shirt and it looks like you have no pants on”

we both replied immediately with no and then his mom said that he really loves me (and yes we have said it to each other) and she just does not want him to have sex and that she wants me to look a little nicer, should she be able to do this? she wants me to change who i am