A gaudy, overly-dressed woman who tends to behave ex-tra-vagant-ly, in English?
We call her a "Perua" (Puh-roo-uh) as in the wife of the turkey, which is a "Peru".
I'm inclined to think we would find her in Hollywood - those wives...and she may be new to money. Also, I would say that her sense of style is impaired, or not. She may also be a ditzy, brittle blonde, or raceless. Her chief concerns are in her clothes and her extravant jewellery.
Thanks in advance.