The way Mary talks/her voice
It's taken me five seasons to figure out that Mary Fitzgerald on Selling Sunset has the same way of speaking as Jessica Simpson.
They both push their lips out, speak from the back of their mouths, and sort of push the words out.
And they both say "wheel" as "will" and "because" as "buhcuhz".
IDK if Mary is also from Texas, like Jessica, but hey, I'm just happy to have connected the dots. It's been bothering me for years!