Dwayne Johnson made the announcement via Instagram confirming that Pamela - who was the original star of the TV series - would be joining the new cast.
Dwayne, also known by his WWE moniker The Rock, wrote under his Instagram photo: "She introduced the world to 'CJ Parker' and became one of the most iconic characters of a generation - for the most successful TV show of all time.
"A pleasure to welcome (as gorgeous as ever) Pamela Anderson to our #BAYWATCH cast. We couldn't have made this movie without you. Welcome home. Thrilled you had a blast with us! #BAYWATCH MAY 19, 2017. #PamAnderson #OS #OriginalSmokestack."
Pamela starred in Baywatch from 1992 until 1997, and the reboot will see her character played by Kelly Rohrbach.
Meanwhile, Dwayne will play lifeguard Mitch Buchannon, a role which was originally acted by David Hasselhoff.
It was only last month that Dwayne, who is one of the co-producers of the film, confirmed that David would be making an appearance in the movie too. The Baywatch movie will also star Priyanka Chopra and Zac Efron. Filming has already started with a release scheduled for May next year.
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