Former The Only Way Is Essex star Maria made the comments while watching the current series of Celebrity Big Brother, where Stephanie has been clashing with another former TOWIE star, Gemma Collins.
Sticking up for her old co-star, Maria claimed ex-Hollyoaks actress Stephanie should be thankful to the Essex cast as they once travelled up north to join forces with the Hollyoaks cast to help boost publicity for the show.
Both are made by the same production company, Lime Pictures.
Maria tweeted: "We had to go all the way to Liverpool to get papped with the Hollyoaks cast. Stephanie needs to be grateful for TOWIE."
She also echoed Gemma in calling Stephanie a "disgrace" for kissing housemate Jeremy McConnell when she has a boyfriend on the outside world, model Sam Reece. "Dunno about everyone else but if I went on CBB no way would I play up like that," said Maria.
During the row between Stephanie and Gemma, Stephanie had accused GC of being talentless, saying her only claim to fame was being in TOWIE.
She ranted: "You have your talentless people in there like Gemma who think they're celebrities but they're nothing worse than s**t on your shoe. Just from a TOWIE reality TV programme, thinking they own you and can make you do what they want you to do.
"I would rather s**t on my own head than ever be like them and the way they are because I think it's disgusting."