'Please sort it out!': Woman who is a size 12 but couldn't squeeze into a SIXTEEN dress at H&M pleads with the retailer to re-examine its labels (and attracts support from over 1,000 fellow shoppers)

A size 12 woman has called for H&M to 'sort out their sizes' after she struggled to squeeze into a size 16 dress from the high street retailer.

In a post on the brand's Facebook page, Lowri Byrne, a 22-year-old student from Swansea, shared photos of herself donning the size 16 dress and described the fit as 'absolutely ridiculous' and noted that she could 'barely breathe'.

She said that many women would take the sizing issue to heart, and pointed out that if she was easily offended, it would 'devastate' her that she couldn't fit into a dress two sizes bigger than she actually is.

She explained: 'When I asked if this dress came in an 18 the store assistant said 'ahh yeah you have to go up a couple of sizes with these'. A couple?!? Going up 3-4 sizes surely should make you realise that you need to seriously sort out sizing!!!'. 

Her post has been liked by thousands of women and attracted hundreds of comments from ladies who agree that the sizes aren't true to life.  

Lowri Byrne, 22, from Swansea, shared photos of herself donning the size 16 blue broderie anglaise dress, pictured, from H&M and said she could 'barely breathe' in it. She said that when she asked a shop assistant if the dress came in a size 18, she was told 'you have to go up a couple of sizes in these'

Posting the photos on H&M's Facebook group, Lowri, who is a size 12 student and wearing her own dresses in these pictures, asked them to 'please' sort out their sizes.

In her post to H&M, which has been liked by over a thousand women, the student said: 'Going up 3-4 sizes surely should make you realise that you need to seriously sort out sizing!' (pictured is the size 16 label in the dress she tried on)

Lowri was in a Plymouth branch of the store when she was advised to 'go up a few sizes' by staff after failing to fit into a size 16.   

Speaking to MailOnline, Lowri, who is yet to receive a response from the store, said: 'I have already been back since and bought some casual summer dresses as I really do love their clothes.

It's just a shame that the sizes vary from being so small to being the perfect size. 

'And I'm happy that my post has had the support it's had and that women now realise that the sizes are small in H&M and has nothing to do with themselves.'

MailOnline has contacted H&M and is awaiting comment. 

The student's friend even took some snaps for her to show the tight fit of the dress, which was actually two sizes bigger than her size. Discussing the ill fit in her post, Lowri said: 'Not only was this annoying because I wanted to buy this dress, but so many women take what size dress they buy to heart'