Don't worry though, judging by that suit bag Mark will be back to his smart self before you know it.
Mark, 33, was snapped in Dublin, Ireland, while wearing a red baseball cap, denim shirt and T-shirt combo, jeans and a comfy pair of trainers.
The singer's face is looking a little fuller these days, which is a sign that he is quite rightly enjoying some down time after a hectic decade touring the world with Westlife.
Since Westlife's split, Mark has been busy recording his own solo music. Last month, he tweeted: "Getting 2 finished demos back this week which is exciting!
"There's no dates for anything yet but I'm working away and having a great time :) x"
Would you have recognised Mark? Tell us below, as the best comment from across the website each week wins £50.
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