Twin Twist

The Twin Twist is a classic Big Brother Twist.

It is where one set of Twins alternate shifts in the Big Brother House for a specific amount of weeks before the secret twin joins the game as a new houseguest.

The twist has been used both in Big Brother U.S and Big Brother Canada.

Twins
So far only Two sets of Twins have been apart of Twin Twist

Big Brother 3 (U.S)

 * The Makeup Twins: Chapstick & Mascara are twin sisters who were apart of the first ever Twin Twist they had to last 4 weeks switching places in the house as Chapstick without getting evicted luckily they succeeded and Mascara was able to enter the house as herself.
 * Times Switched: They switched places in the house more then 30 times throughout 4 weeks. The girls switched so many times people ended up losing count of how many switches happened.

Big Brother Canada 2

 * The Swine Brothers: Porky & Hammy Swine are twin brothers who were apart of the Twin Twist on BBCAN2. They had to last 2 weeks switching places in the house as Hammy without getting evicted Pre Jury. Luckily they were successful and after the Week 2 eviction Porky was able to enter the house as himself.
 * Times Switched: They switched places in the house about 15-20 times throughout 2 weeks.