Last night, Lauren was one of 14 housemates to enter this summer's Celebrity Big Brother house and Maria was quick to give her opinion.
The girls starred together in The Only Way Is Essex and it's fair to say they didn't part on the best terms. Taking to Twitter last night, as the CBB launch show aired on C5, Maria branded Lauren as "fake".
She tweeted: "Wait till she can't keep up this fake friendly act anymore! Either she's had a personality transplant or this is some serious act."
Maria added: "Lauren's voice has changed more than Frank Maloney's. I think she's trying to sound sweet and innocent."
But while Maria clearly isn't backing Lauren to win CBB, many of her former TOWIE stars have been showing their support.
Harry Derbidge tweeted: "Who's your favourite #CBB housemates? Mine is of course @LaurenGoodger she looks fab! #LaurenToWinCBB."
Lauren Pope added: "Good luck @LaurenGoodger all the way from Ibiza, can't wait I watch! #CBB."
Vas J Morgan also said: "We all love a selfie ... Don't be scared Lauren .. We support you #CBB."
Along with Lauren, former Geordie Shore star Ricci Guarnaccio is taking part in this series of CBB, as is The Hills and Made In Chelsea's Stephanie Pratt and Kelly Brook's fiancé David McIntosh.
See the full CBB lineup here:
Copyright: Channel 5