I am not embarrassed to open the front door in my pjs. Not for a second
Sure, but The op specifically stated she was embarrassed to open the door due to being embarassed about how she was dressed...hence the responses to her.
On a seperare note I actually have seen someone out in their pyjamas and dressing gown. We were sitting waiting for a take away and two women walked past the parade of shops in their pyjamas and dressing gowns. They'd also been out for a takeaway. One of them was wearing a fluffy pink dressing gown with white stars on.
The interesting thing was I turned round as they walked past and looked at them, becayse well it's not every day you see someone walking about in their pjs, and one of the woman looked back at me, then she looked down and the look on her face was embarassement.
I've no idea why people deliberately put themselves in situations that embarass them. This was a very busy parade of shops. Early evening. Winter. And genuinely they looked ridiculous. Everyone looked at them, and some were laughing, but the rest just looked away in disgust.
You can get away with going out in your pjs,if you put a coat on, but if you put your very obvious dressing gown on, then from the reaction they got, you're just asking for derision.