A GLASGOW shopper has had the internet in stitches after she revealed her horror that she had tried on someone else's bra in Primark by mistake.

Student Natalie Brayshaw says she suspects that somone had shoplifted the bra that she actually wanted to try on and left their old bra behind instead.

READ MORE: Shocked Glasgow shopper finds potato scone in her new handbag

Natalie posted on Twitter: “Tried on a bra in Primark and it was nice so I went to buy it but there was no tag so the guy went to find a supervisor to get a code, comes back and goes, ‘This isn’t ours, it’s a swap’ so someone has literally left THEIR OWN BRA on a hanger in order to shoplift one AND I TRIED IT ON.”

Natalie's tweet has since gone viral after being retweeted more than 46,000 times. It has also received more than 235,000 likes.

READ MORE: Shocked Glasgow shopper finds potato scone in her new handbag

More than 1500 people have also commented on her Tweet, many of whom have been shop workers who claim this is a common occurrence.

One woman who claimed that she used to work for Primark said it happens all the time, adding: "It’s absolute horror. STOP DOING THIS PEOPLE.”

Another said: "Hun people literally do the same thing at Debs, last week I found a Matalan top in the changing room,"

READ MORE: Shocked Glasgow shopper finds potato scone in her new handbag

While another posted: "This used to happen a lot when I worked in a shoe shop, people walking out with our shoes and leaving theirs behind, or other customers trying on other people’s shoes as they were trying on new ones."