Child star's transformation for mature role: 'This looks insane'

Bailee Madison first appeared on the big screen in 2006, kickstarting a lengthy film career.

Stealing the show in films such as Bridge to Terabithia and Just Go With It, the star has worked since she was just six years old.

Working with A-list actors such as Jennifer Aniston and Adam Sandler, she has grown up in the public eye.

Now, the actress, 22, has transformed for her latest role: a pregnant schoolgirl in a hotly anticipated teen TV show.

Pretty Little Liars: Original Spin hits Binge on July 29, and it’s a spin-off to the 2010 teen drama which helped launch careers for Lucy Hale and Ashley Benson.

RELATED

• Gossip Girl's Taylor Momsen unrecognisable in new photo: 'Beautiful'

• Beauty and the Geek star stuns with 'incredible' makeover: 'Glow up'

• Stranger Things' David Harbour on dramatic 34kg 'transformation'

Bailee plays the lead role of Imogen Adams, and the trailer shows that the 10-part thriller is taking on a much darker tone.

Following a group of friends being targeted by a character known only as ‘A’, Imogen and her friends must find a way to deal with the threat.

Fans went wild over the trailer, with one writing: “THIS LOOKS INSANE”.

“I actually like that it seems a bit darker than the original, can’t wait!” another added.

“It’s giving me Pretty Little Liars mixed with Scream the series vibes,” a third chimed in.

The Once Upon A Time star shared photos of the cast at the premiere on Instagram, and wrote a heartfelt note about the show.

“10 days away from Pretty Little Liars: Original Sin! What a ride we’ve already been on together, and it’s only just beginning. So proud of our cast, and so thankful for their hearts.

"To Roberto Aguirre-Sacasa and Lindsay Calhoon Bring, I love you both, thank you thank you thank you. (So many more photo dumps to come folks, so prepare yourself! Haha),” she finished.

Speaking to news.com.au, the star admitted that she's ready to step into more adult roles.

"I think for me with this show coming out, it feels deeply personal because I do look at this show as a next chapter, hopefully for my life and as an introduction to myself as a young woman,” she said.

“My character, when we meet her, and as an actor, it was an immediate dive into the world that she was experiencing, which is a whole lot of tragedy. A lot of pain. And so for me, obviously, that was going to be a really big challenge, but I think that‘s what excited me so much."

Never miss a thing. Sign up to Yahoo Lifestyle’s daily newsletter.

Or if you have a story idea, email us at lifestyle.tips@yahooinc.com.