IT'S an age old tradition that unless otherwise stated, you shouldn't wear white to a wedding.

And one guest has been slammed online for arriving at her friend's wedding in a white midi dress, blazer and heels - and even posing next to the bride while holding her bouquet.

3 The guest was slammed for wearing all white Credit: Reddit

An image of the pair was posted on Reddit's wedding shaming thread and users were horrified at the guest's choice of dress.

The image showed the woman stood with the bride, in a white midi dress, white strappy heels and a crisp white blazer.

The newlywed bride meanwhile is wearing a strapless number, with a sweetheart neckline, cinched-in waist and drop hem.

In the photo, the wedding guest even appears to be holding the bride's bouquet as she poses for the snap.

3 Other users were not impressed Credit: Reddit

3 Others called it "tacky" Credit: Reddit

And other Reddit users were not happy, with one commenting: "I actually own the same dress she’s wearing - I bought it to wear to my rehearsal when I got married.

"As in, I bought it when I was specifically looking for a white dress."

While another said it was "tacky as f***".

Another person revealed they wouldn't even wear certain shades of yellow in fear that they would look "too similar to white in photos".

"There are some shades of light pink/light blue/light yellow that I wouldn’t even wear to a wedding because they could look close to white in pics, let alone off-white," they wrote.

"The only exception would be if the bride wanted everyone in white. I did attend a wedding once where that was requested but I assume that isn’t the case here."

Would you wear white to a pal's big day?

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In other wedding news, we told you how one bridezilla was slammed for planning to overcharge wedding guests for drinks so she could ‘recoup costs’.

We also revealed a bride-to-be was criticised for asking her bridesmaid to ‘cover all of her tattoos with make-up’ for the wedding.

And we showed you wedding shamers mocked one bride’s heirloom engagement ring saying the stone looked like a ‘squirt of mayonnaise’.