The reality TV star may have found fame on The Only Way Is Essex, but before appearing on the popular ITV2 show he worked as a successful tailor and designed smart suits.
And it seems Mario's passion for his profession is as strong as ever, since he is now working on solo projects that will incorporate his love of style and his tailoring expertise.
Yesterday (5 August), Mario kept his fans up to date with his hectic schedule and revealed that he had already started choosing fabrics and writing up pages for his new book.
He tweeted: "Working on tailoring bits today for my new company! So much to do in such little time..."
"So pattern designed and first 10 suit fabrics chosen... Now back to writing my tailoring book..."
The star - who has just returned from a lads' holiday to Ibiza to celebrate Joey Essex's birthday - also posted pictures of the design process, displaying various pieces of material and a very neatly written passage in a notebook. Nice handwriting Mario!
It seems launching clothing ranges and designing fashion staples are popular ambitions for the TOWIE cast members, as Gemma Collins, Sam Faiers, Jess Wright and Joey Essex all own their own boutiques and are enjoying a great deal of success with their various lines.
Even ex-TOWIE star Mark Wright has created a capsule collection for Littlewoods recently that includes dapper suits - which he has modelled himself - so it looks like Mario might have to give him a run for his money!
Are you looking forward to seeing Mario's new range? Let us know below, as the best comment each week wins £50!