The former TOWIE star, 37, stepped out with his wife Michelle Keegan for the highly-anticipated event on the weekend.
Mark and Netflix star Michelle, 36, launched their brand new sports range called Aytee7 at the Trafford Centre in Manchester.
Throughout the weekend the TV couple hosted a meet and greet for fans at the centre whilst selling the new products.
The 40-piece collection is exclusive to Very.com.
However, Mark was left raging when a newspaper report suggested the event had been a flop.
The Mirror stated how Mark was “waiting on his lonesome as nobody turns up to his clothing range launch”.
Seething, the star took to Instagram to rant to his 1.9 million followers to hit back at the claims.
Mark said: “Never really do this, as it’s never been something that really bothers me. Especially when it’s normally complete nonsense.
“However, I won’t be quiet when something could be detrimental to a business that we have worked so hard on for a number of years to get it to this point. Especially when the story couldn’t be further from the truth.
“Sometimes a nonsense press story just goes away, but people seem to like negative gossip and this one is doing the rounds a bit so had to be done.”
Mark was flooded with support from celebrity pals, with Dermot O’Leary writing: “Never let them get you down.
Keep that handsome chin up.”
Paddy McGuinness wrote: “Smashing it pal.”
While his TOWIE pal James ‘Arg’ Argent posted: “Love this, Now drop me round some freebies please.”