A new trailer for Big Brother All Stars has dropped and old wounds cause big drama among the housemates!

Joel, 26 – Fitness fanatic

This housemate may play a good physical game, but we'll have to see how their strategic, mental game goes.

Josh, 32 – Ex international model

The former international model from Byron Bay plans to ruffle some feathers in the Big Brother house.

"I want to be a leader. I got no desire to be a sheep. I probably will get under people's skin," he says in a promo.

To a room of shocked housemates, the 32-year-old boldly announces: "We are here to win a game. You wanna keep playing a happy family? We are not here to make best friends temporarily. I'll put a target on your backs too."

Can Josh rise to become the greatest housemate of all time?

Sam, 31 – Intimacy coach

Sam says she flirts with women just as much as she does with men so will the art of seduction prove successful in the Big Brother house?

Aleisha, 24 – Entrepreneur

Better watch anything this housemate says as she admits lying comes "scarily easy" to her.

Johnson, 25 – Big Brother superfan

Having watched "every second of every episode", Johnson knows all the tricks in the book.

Tim Dormer, 37 – 2013 winner

Nine years on from his victory, can Tim do it again?

Tully Smyth, 34 – 2013 housemate

She's famed for her rendezvous with Anthony Drew but has vowed "history is not going to repeat itself".

In a sneak peek for the upcoming season, Tully tells Drew: "Out of everyone I thought would be here, you were nowhere near my list."

She then broke down in tears in the diary room, saying: "It's not normal to be in this environment with your ex-boyfriend. It's unnecessarily cruel."

Anthony Drew, 33 – 2013 housemate

Yep, Drew's back too! In a preview for the upcoming season, Drew and new contestant Sam are seen passionately kissing, with Tim declaring: "That's Drew's new girlfriend!"

"He's never single for long," Tully says in response.

Dave Graham, 42 – 2006 housemate

He made it to third place in 2006 so let's see if Dave goes from bronze to gold this season.

Trevor Butler, 48 – 2004 winner

Not only did Trevor win a whopping one million bucks, but he also proposed to girlfriend live on stage during the finale. What excitement will be bring this year?

Reggie Bird, 42 – 2003 winner

She's the Aussie battler that Australia fell in love with in 2003. Nineteen years on, one of the nation's most celebrated housemates is back, but is she prepared for an all-new game?

A lot has changed in Reggie's life, but the 2003 winner is ready to take on everything that comes her way.

"Big Brother changed my life. I was the little Aussie battler and I related to a lot of people. Big Brother's in my blood, I just can't believe I'm here! This may be a new game, but I'm still the same old Reggie," she declares in a preview.

The 42-year-old also broke down in tears while discussing her diagnosis with retinitis pigmentosa, a rare eye disease that can cause total blindness.

"I've now lost all of my peripheral vision, I have no night vision. I could wake up tomorrow and it's going to be gone. Oh I'm going to cry!" she says in the speak peek.

Estelle Landy, 33 – 2012 housemate

She landed herself the most nominations of any contestant in season nine, but Estelle is coming back with a bang.

Layla Subritzky, 33 – 2012 runner-up

"I'm so excited to be in my favourite house again," the season nine runner-up penned on Instagram.