The brunette beauty, who recently lashed out at body shamers , was attending a meet and greet at Boots on Regent Street.

But instead of getting to see the super star on top form, hundreds of fans caught a glimpse of Ariana having a rare off day.

The former Nickelodeon star had obviously suffered a mishap with her tan and looked several different shades of bronze.

Perhaps even more cringe-worthy, there was also signs of finger marks across the singer’s patchy two-tone skin.

Ariana seemed obviously to the mishap as she shouted to fans and blew them kisses.

She wrote: “that meet n greet lifted my spirit so much. thank you my babies for your love, humor and kindness always. I dunno what I’d do w/o you.”