Am I the jerk for telling my girlfriend to cover up her body when strangers enter the home?

I am fully aware that title sounds sexist, but hear me out, please.

My girlfriend comes from a very wealthy background and group with maids,

chefs, chauffeurs, etc.

I was raised in a completely opposite environment and still adjusting to dating someone like her.

When we're not with her parents, we spend a lot of time at one of her apartments.

Here's the issue.

My girlfriend likes to walk around home barely wearing anything,

which is fine, but she even does this with the help around.

For example, last month her family hired a new driver for her.

He stopped by the apartment to introduce himself.

She was only wearing underwear.

Keep in mind, this is the first time they've met in person.

I felt awkward.

He was visibly awkward and she didn't care at all.

She was casually chatting to him while scrolling away on her phone.

She does this all the time.

She doesn't think she needs to wear any decent amount of clothes at all

when people that work for her are around.

She will casually walk around just wearing a thong or a tiny crop top,

just a crop top, nothing else.

She even does this with complete strangers.

...