Housemate 13

The unlucky one.

Thirteen contestants will enter the house on Friday evening and the producers have added several twists in a bid to keep the programme fresh.

The house will be transparent so the contestants will feel more "claustrophobic" and the showers will be outside.

"The house will feel very different to any previous house and more than ever this year there really is nowhere to hide," said Commissioning Editor Angela Jain.

The producers also said the 13th person would be the "unluckiest housemate ever".