Pregnancy discrimination? I got kicked out of Houston's Restaurant in ATLANTA for wearing this!

(This is a selfie before I went)
Long story...
A couple of weeks ago my fiancé treated myself and his parents to Atlanta for the weekend. I made a suggestion to go to Houston's because it's one of my favorites (well it was). So we all decide to go. I get dressed putting on what I felt most comfortable cotton low cut summer dress and some wedges. Being 6 months pregnant and and looking sexy at all times is hard to do but I wanted to look good not for my man but also for myself since I haven't been out in a while. We get to the restaurant and do valet etc so far so good. Get inside the host comes up to me tells me how cute I am then asks for my me for the waiting list. She warned me it will be an hour since it was a Saturday evening (8:30pm to be exact). I agreed but asked where the restroom was because a girl had to go lol. She directs me and as soon as I turn to walk towards the bathroom this woman dressed in restaurant attire (no badge) comes up to me and making a gesture to cover my shoulders. I assumed she was just being nice and asking if I needed a shaw since I'm pregnant. I said no thanks. She then starts yelling at me in the dining area. I couldn't make out what she was saying because it was so loud. I told her after I use the restroom we can talk because I didn't understand what she was saying. She starts yelling more saying I can't go to the bathroom that I need to leave. (I of course was not about to have anyone tell me I can't use a public restroom) she goes to grab my arm and thankfully my fiancé gets in between us and tells her, "do you not see she's pregnant!? She needs to use the bathroom and don't you dare touch my wife" (he calls me wife). We proceed to bathroom finally! Once I come out we go by the front where my in laws and about 20 other people were waiting for their tables. 5 min pass and here comes the same lady (still don't know her name or position at this establishment) she goes to my fiancé telling him he needs to make me leave because I'm dressed inappropriately. He was like how? Her breasts? He started pointing at everyone else's breasts sitting beside me just as out or more saying if she has to leave they do too. She ignored him and started yelling now embarrassing me. She kept saying families are here. I'm like and I'm here with my family. This is dinner environment with a bar at almost 9 pm! In my past experiences I've worn sexier outfits to this restaurant in different cities and no one had a problem....we left before the cops got there of course my fiancé cussing her out before the door shut behind us lmao. I honestly feel it was because I was pregnant and wearing something as "sexy" as I had on. It's ashamed because it's not her place to not only belittle me but embarrass me as well.
With little investigation that woman was the manager. All she needed to do was introduce her self as the manager and ask to speak to me in private. I could have easily tied up the dress for the sake of my in laws wanting to try out the food. But no she had to be unprofessional and down right disrespectful.
(Same manager/establishment was tried for a sue for racial discrimination for similar scenario in year 2015) I'm not sure of the outcome.
Same night same location this woman wore this

A week prior to that these women wore this

This was also online about their dress code

I'm so upset about this. There's ways of doing things and I feel she crossed the line. What do you ladies think?
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