AITA for asking my girlfriend to wear a bra to dinner?

My (28M) girlfriend (27F), let's call her Lynn, came to visit me in Hawaii and is staying with me in my apartment. I have a nice ocean view spot here where we can reserve a table at a restaurant just for us and some flowers and stuff, it's kinda our anniversary dinner spot. We went there for our 6 month, 1 year, 2 years, 3 years anniversary's. <br><br>This time Lynn wanted to bring her sister (21F) along because she's never been to Hawaii. I was a bit put off about it because we're closed from COVID and I Hate that there's now people at our dinner spot, but I told Lynn she had to do what she wanted so I locked in the reservation. <br><br>Lynn's sister is just not wearing a bra tonight, only having on a lightweight lace cup thing and she's leaving her doors and windows open in the living room and dining room. I asked her to wear a real bra and close her windows and doors but AITA for wanting her to?