The beautiful actress, who was a fan favourite in Hollyoaks as feisty Mitzeee, will play a recurring character on Switched At Birth, a teen drama that airs on the ABC Family network in America.
There's no word on who Rachel will be playing yet.
Co-star Constance Marie tweeted a photograph of herself and Rachel together on set this week, saying: "Let's welcome the @RachelShenton to #switchedatbirth !!! Her character is a secret, but she is #Lovely."
Switched At Birth secured the largest-ever premiere ratings for ABC Family on its debut in 2011, with a massive 3.3 million people tuning in. (4.9m including the repeat!)
The show stars High School Musical actor Lucas Grabeel (who played Sharpay's twin brother Ryan), Glee's Max Adler (Dave) and Breaking Bad star RJ Mitte (Flynn).
For Rachel, not only is this a fantastic series to join, but also a TV show close to her heart.
Switched At Birth has been praised by critics and has won awards as the first US series to feature multiple deaf and hard of hearing characters. Entire scenes are filmed using American Sign Language, and it was the first drama in US TV history to broadcast a whole episode using sign language.
Rachel's late father lost his hearing when Rachel was a child. She is now fully fluent in sign language and volunteers for her local Staffordshire charity Deaflinks, as well as acting as an ambassador to the National Deaf Children's Society.
Last year, the star took on a gruelling challenge to climb Mount Kilimanjaro to raise money for the National Deaf Children's Society, which helps improve the lives of deaf children.
Before beginning her trek, she told Reveal: "I'm ambassador for the NDCS and care a lot about it. My dad was deaf, I'm fluent in sign language and have been involved with the deaf community for years - especially with the NDCS. I've done a skydive, I've sailed, I've done white water rafting and I kind of thought, "I wanna do something that really scares me". Now it's come round and I'm like, "Oh gosh, it's definitely done that, I'm definitely scared!"
On her return, she told us: "It was overwhelmingly difficult, yet the sense of achievement was overwhelming as well. I'm so glad I did it. It was amazing, but no matter how much you prepare, you will always underestimate it. I'm really proud of myself for doing it and actually getting to the top!"
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