PICTURE EXCLUSIVE: Zac Efron checks out bikini babe Zoey Deutch while Robert De Niro gets hands on with co-star Aubrey Plaza on the set of Dirty Grandpa

By Heather Waugh for MailOnline

Published: 04:25 GMT, 5 May 2015 | Updated: 08:32 GMT, 5 May 2015

There seems to be no end to the escapades Zac Efron and Robert De Niro are getting into on the set of their new movie Dirty Grandpa.

Taking the production to a beach in Tybee Island, Georgia on Monday, the duo were seen getting up to mischief surrounded by bikini-clad babes.

Zac, 27, was spotted sneakily checking out his co-star Zoey Deutch in her patterned blue two-piece while Robert, 71, got hands-on with actress Aubrey Plaza. 

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Scoping the babes: Zac Efron was back on the set of Dirty Grandpa in Georgia on Monday and was spotted checking out his co-star Zoey Deutch who wore a patterned blue bikini

Scoping the babes: Zac Efron was back on the set of Dirty Grandpa in Georgia on Monday and was spotted checking out his co-star Zoey Deutch who wore a patterned blue bikini

Although it was a sunny day in the southern state, Zac was fully dressed in a checked shirt and blue chinos as he got into character as Jason Kelly.

For a preppy touch, the Bad Neighbors star tied a grey sweater around his shoulder and donned brown leather moccasins. 

The actor shaded his eyes with some stylish sunglasses which he pulled down slightly to scope out his 20-year-old pretty co-star.  

Hands-on: Robert De Niro made himself useful by covering co-star Aubrey Plaza in sun tan lotion

Hands-on: Robert De Niro made himself useful by covering co-star Aubrey Plaza in sun tan lotion

Sneaky: Zac, 27, tried to be discreet wearing stylish sunglasses which hid his eyes as he stood behind Zoey who plays his love interest in the comedy

Sneaky: Zac, 27, tried to be discreet wearing stylish sunglasses which hid his eyes as he stood behind Zoey who plays his love interest in the comedy

Just an average day: The actor appeared to be surrounded by a bevy bikini babes

Just an average day: The actor appeared to be surrounded by a bevy bikini babes

Dapper dude: Zac was unusually covered up for the beach in blue trousers and a checked shirt
Dapper dude: Zac was unusually covered up for the beach in blue trousers and a checked shirt

Dapper dude: Zac was unusually covered up for the beach in blue trousers and a checked shirt

Zoey takes on the role of Shadia, an earthy environmentalist and Jason's love interest.

Dirty Grandpa centres around Jason (Zac), an uptight gent who is tricked by his recently widowed grandfather into taking a roadtrip to Florida for spring break ahead of his wedding.

Jason eventually discovers that his foul-mouthed grandfather is really on a mission to get laid during spring break.  

Scantily clad: Aubrey and Zoey displayed their slender physiques as they enjoyed a sunny day of filming

Scantily clad: Aubrey and Zoey displayed their slender physiques as they enjoyed a sunny day of filming

 Location location: The lucky actresses got paid to top-up their tans on Monday

 Location location: The lucky actresses got paid to top-up their tans on Monday

Bikini babe: The 30-year-old Parks And Recreation star looked fantastic in an electric blue two piece
Bikini babe: The 30-year-old Parks And Recreation star looked fantastic in an electric blue two piece 

Bikini babe: The 30-year-old Parks And Recreation star looked fantastic in an electric blue two piece 

De Niro, 71, plays former Army general Dick Kelly who thinks his grandson is marrying the wrong woman.

The Goodfellas actor was seen gingerly applying some sunscreen to Aubrey, 30, who displayed her slender physique in an electric blue bikini.  

The former Parks And Recreation actress plays Lenore, who just wants to make the most of spring break with and party with her pals.  

Getting to work: Aubrey watched as her 71-year-old co-star gingerly covered her in lotion

Getting to work: Aubrey watched as her 71-year-old co-star gingerly covered her in lotion

You missed a bit! The actor made sure Aubrey's back was covered too

You missed a bit! The actor made sure Aubrey's back was covered too

Party girl: Aubrey plays Lenore, who just wants to make the most of spring break with her pals
Party girl: Aubrey plays Lenore, who just wants to make the most of spring break with her pals

Party girl: Aubrey plays Lenore, who just wants to make the most of spring break with her pals

Up to no good: Robert plays foul-mouthed former Army general Dick Kelly who thinks his grandson is marrying the wrong woman

Up to no good: Robert plays foul-mouthed former Army general Dick Kelly who thinks his grandson is marrying the wrong woman

Whoa there: The Goodfellas actor went a bit overboard and messy with the application

Whoa there: The Goodfellas actor went a bit overboard and messy with the application

Ladies man: It appeared that the actor was getting comfortable on a towel next to his co-star

Ladies man: It appeared that the actor was getting comfortable on a towel next to his co-star

Grandpa's on vacation: Robert looked summery in a tropical print shirt and grey shorts

Grandpa's on vacation: Robert looked summery in a tropical print shirt and grey shorts

At one point the brunette was seen being picked up by hunky co-star Jake Picking who threw her over his shoulders as the cameras rolled. 

Other stars include Julianne Hough and Dermot Mulroney in the comedy scheduled for a release date of August 12, 2016.

The film was written by John Philips and is directed by Dan Mazer (I Give It A Year).

Damsel in distress? Aubrey was whisked away by her muscly co-star Jake Picking

Damsel in distress? Aubrey was whisked away by her muscly co-star Jake Picking

Now that's talent: Cameras rolled as the actress was flipped upside down 

Now that's talent: Cameras rolled as the actress was flipped upside down 

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