Alexandra Daddario
Alexandra Daddario has been cast as Summer Quinn in upcoming Baywatch movie, alongside Dwayne Johnson and Zac Efron Frederic J. Brown / Getty

Alexandra Daddario will be joining Dwayne Johnson and Zac Efron for the upcoming Baywatch movie. Despite the movie being labelled a "reboot" of the hugely popular 1990s TV series, 29-year-old Daddario has been cast as Summer Quinn, the character played by Nicole Eggert on the original show.

Johnson broke the news on Instagram, sharing a photograph of himself with his San Andreas co-star Daddario, alongside the enthusiastic caption: "IT'S OFFICIAL: Want to welcome the talented and gorgeous @alexannadaddario to the cast of #BAYWATCH for the role of 'Summer'. Alex is a one of kind woman (I know from experience) and can't wait for you guys to see her own the role."

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IT'S OFFICIAL: Want to welcome the talented and gorgeous @alexannadaddario to the cast of #BAYWATCH for the role of "Summer". Alex is a one of kind woman (I know from experience) and can't wait for you guys to see her own the role. The female roles of #BAYWATCH have become extremely hot properties around Hollywood and as promised, the quality women we'll cast are stepping into these roles to have fun and make them iconic for the world to enjoy. The #BaywatchFamily so far consists of a tatted up bald guy named Rock, the cool, yet extremely unattractive @zacefron, the talented and gorgeous Alexandra Daddario...and some big casting announcements coming soon. And juuuuust wait til you guys see who we cast for the iconic role of "CJ Parker"....👀 #CueSlowMotionRunningDownTheBeach #WhosPuttingTanningOilOnMyBack? #OrMyFront #BAYWATCH 👊🏾🌊

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He said the the female roles in the film had been highly sought-after within the industry. Daddario beat out the likes of Alexandra Shipp (Straight Outta Compton) Nina Dobrev (The Vampire Diaries) and Ashley Benson (Pretty Little Liars), who had all reportedly auditioned for the part of Summer.

Seth Gordon
Seth Gordon could inject some (intentional) humour into the movie Ethan Miller/Getty

"The female roles of #BAYWATCH have become extremely hot properties around Hollywood and as promised, the quality women we'll cast are stepping into these roles to have fun and make them iconic for the world to enjoy," he said.

Johnson also teased that the name of the actor cast to play C.J Parker – Pamela Anderson's iconic role in the original TV series – would be announced soon.

Seth Gordon, a well-versed comedy director after his work on Horrible Bosses and Identity Thief, will helm the self-confessed "big, fun and R-Rated" picture, which will centre around an accomplished former Olympian (presumably Johnson) who squabbles with the leader of a cocky but superior team of lifeguards. Reluctantly, the unlikely pair find themselves teaming up in order to save the beach from environmental destruction at the hands of a ruthless oil tycoon.

Friday The 13th's Damian Shannon and Mark Swift penned the last draft of the script the film-makers will be working with. Beau Flynn (San Andreas) and Ivan Reitman (Ghostbusters) will be producing alongside Johnson's company, Seven Bucks Productions. The movie is slated to begin shooting in early 2016, with no official release date yet. However, rumours have suggested the studio is hoping for a summer 2017 unveiling.

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