Mario will be back on our screens for the festive hour-long special, which will see him in a scene with Chloe Sims, Billie Faiers and her daughter Nelly.
In scenes to air on Wednesday's show, Chloe pays a visit to Billie and Nelly, and it's not long before Mario pops round too.
As the trio catch up, Mario also gives Nelly a present ahead of Christmas - well, you can never have too many presents at that age!
Also, is it just us is anyone else loving Billie's red Christmas tree!
Mario is making a special return to the ITVBe reality show alongside Gemma Collins and Lauren Goodger.
Gemma filmed her scenes with Bobby Norris, James 'Lockie' Lock and Pete Wicks in her clothing boutique. Meanwhile, Lauren filmed her scenes with Chloe and Danielle Armstrong.
Mario quit TOWIE in August after four years of the ITVBe reality show. He said at the time of his exit: "I have had a great time on TOWIE and relished the many opportunities the show has given me but after 14 series, I feel it is time to move on and explore something new."
In other news, Mario has moved on from his relationship with model Emma McVey as it was announced he is now dating heptathlete Louise Hazel.
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