What does 'Red Star' mean in this context?
"I stand before you tonight in my Red Star chiffon evening gown."
This is what Margaret Thatcher said when she was a stateswoman in the UK.
What does red star refer to in her speech? The first letters of red and star were capitalized in all quotes I found.

Is there a significance funny enough that the crowd laugh loud?

https://www.youtube.com/watch?v=oAgM6YHioxI

Question

What does 'Red Star' mean in this context?
"I stand before you tonight in my Red Star chiffon evening gown."
This is what Margaret Thatcher said when she was a stateswoman in the UK.
What does red star refer to in her speech? The first letters of red and star were capitalized in all quotes I found.

Is there a significance funny enough that the crowd laugh loud?

https://www.youtube.com/watch?v=oAgM6YHioxI

Answer

It was a humourous observation. The dress which she was wearing at the time of her speech was a rather dark red chiffon.
The Red Star is a Communist symbol. So, she was likening the colour of her dress to the Red Star. Mrs. Thatcher was very much NOT a communist.