Some sister bonds are strong, but these siblings took it to the extreme in the hit reality series Extreme Sisters . Sisters Anna and Lucy made their mark as "most identical twins in the world", while twins Brittany and Briana surprised the world by marrying identical twin brothers! Stream episodes of Extreme Sisters for free on 9Now. Fans were hooked as they followed the ups and downs of the series' most famous sets of twins – along with their unique challenges along the way.

From proposals to pregnancies and everything in between, here's what your favourite Extreme Sisters haven been up to now. They say a sister is like a built-in best friend, but identical twin sisters Brittany and Briana took it to a whole other level. In 2018, their "fairytale" dream came true when they married identical twin brothers Josh and Jeremy – as you guessed it, the quad simultaneously said 'I do' in a joint ceremony.

The couples met at the Twins Day Festival in Twinsburg, Ohio the year before and got engaged in a joint proposal. They have been married for a little over six years now.  "They understand the twin bond because they have it just like we do," said Briana.

In a more spectacular fairytale ending, Briana and Brittany were successful in falling pregnant around the same time. READ MORE: Brittany and Briana Salyers explain their unique living arrangements with their husbands The twins then announced their overlapping pregnancies in August 2020.  "Guess what!!?? BOTH couples .