Taylor Swift’s jumpsuit has been causing serious controversy

Taylor Swift looked stunning at the Billboard Music Awards on Sunday in her Balmain jumpsuit from the spring/summer 2015 collection.

However, not everybody knew it was Balmain and the whole thing got very awkward.

Fashion retailer Nasty Gal has taken credit for the outfit because they have an almost identical piece.

They posted a picture to social media of Tay on the red carpet and told their followers she was wearing their jumpsuit.

Not surprisingly, the piece quickly sold out because we're sure it cost A LOT less than the Balmain one which cost thousands. 

However, the post was then deleted after people were pointing out the mistake.

The Fashion Law said: "We can certainly conclude one of two things. Either Nasty Gal is so good at copying other brands' garments stitch-for-stitch that even its employees cannot tell the difference between the real thing and the copy, or Nasty Gal knew that Swift was wearing Balmain and was using this opportunity to sell one of its near exact copies."

Balmain have announced a collaboration with H&M which was announced by members of the Balmain Army, including Kendall and Kylie Jenner who were also wearing Balmain on the night.