Simpson took to Twitter to vent her frustration about not being allowed to eat at Miller & Carter because she was wearing a tracksuit.
She claimed it was because she didn’t look “posh enough” and said it was “absolutely terrible and total discrimination against the lower class”.
The Morning Advertiser has contacted Miller & Carter but had not received a response at the time of publication.
However, it did respond to the reality TV star on Twitter and apologised: “We’re really sorry Marnie if we caused any offence. However, we do have a dress code in place at our steakhouses.”
Simpson did receive some backlash on social media about her comments as users questioned her dress sense.
One user, Craig Johnson, said: “Because it’s the image of the restaurant, you go out for a nice meal you want to be surrounded by decent people, not people who can’t be bothered to change out of a tracksuit.”
Simpson replied: “So what if I prefer to wear tracksuits, so you’re saying if I wear a tracksuit I’m not a ‘suitable person’ to sit in a restaurant. I got all dressed and went out for food, how is a lovely expensive tracksuit mean I’m not suitable to eat at a classy restaurant.
“I don’t like to wear dresses or tight clothing. I like to dress comfy all the time, so you’re saying because I’m like this and this is my style, I can’t eat in nice restaurants.”
However another user, David, backed Simpson’s comments and said: “Anyone should be able to wear what they want.”
Meanwhile, earlier this year (July) JD Wetherspoon came under fire after it asked customers wearing tracksuits and hats to leave.