Wet and wild! Platinum blonde Allison Williams takes a dip in Malibu with John Krasinski and Sacha Baron Cohen

Allison Williams got wet and wild on the Malibu set of an unknown project with John Krasinski and Sacha Baron Cohen on Friday.

The 28-year-old actress was either wearing a wig or actually dyed her signature brunette locks platinum blonde for the seaside gig.

The Girls starlet and the 36-year-old Emmy nominee both plunged into the Pacific while fully clothed for the unhinged scene.

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Soaked: Allison Williams got wet and wild on the Malibu set of an unknown project with John Krasinski (L) and Sacha Baron Cohen (R) on Friday

Allison wore a plunging blue maxi-dress while the 13 Hours star wore a white dress shirt, black tie, and black trousers as though they'd been attending a wedding.

The Connecticut-born Yale grad - whose father is MSNBC breaking news anchor Brian Williams - is known for her conservative, preppy and polished style, so this role is quite a departure.

The happily married co-stars also appeared to be getting intimate while laying on the beach for one cozy, sandy sequence.

John - who welcomed his second daughter with wife Emily Blunt last month - appeared to have a blast splashing around in the surf.  

New look! The 28-year-old actress was either wearing a wig or actually dyed her signature brunette locks platinum blonde for the seaside gig

New look! The 28-year-old actress was either wearing a wig or actually dyed her signature brunette locks platinum blonde for the seaside gig

Makeover: Williams on Friday versus her darker locks while attending the Tony Awards on June 12
Makeover: Williams on Friday versus her darker locks while attending the Tony Awards on June 12

Makeover: Williams on Friday versus her darker locks while attending the Tony Awards on June 12

Capturing a carefree moment: The Girls starlet and the 36-year-old Emmy nominee both plunged into the Pacific while fully clothed for the unhinged scene

Capturing a carefree moment: The Girls starlet and the 36-year-old Emmy nominee both plunged into the Pacific while fully clothed for the unhinged scene

Letting loose! The Connecticut-born Yale grad - whose father is MSNBC breaking news anchor Brian Williams - is known for her conservative, preppy and polished style, so this role is quite a departure
Letting loose! The Connecticut-born Yale grad - whose father is MSNBC breaking news anchor Brian Williams - is known for her conservative, preppy and polished style, so this role is quite a departure

Letting loose! The Connecticut-born Yale grad - whose father is MSNBC breaking news anchor Brian Williams - is known for her conservative, preppy and polished style, so this role is quite a departure

Take my hand! Allison wore a plunging blue maxi-dress while the 13 Hours star wore a white dress shirt, black tie, and black trousers as though they'd been attending a wedding

Take my hand! Allison wore a plunging blue maxi-dress while the 13 Hours star wore a white dress shirt, black tie, and black trousers as though they'd been attending a wedding

Meanwhile, the 44-year-old Oscar nominee strutted around in a blanket cape while clad in the same outfit as Krasinski, plus a white cowboy hat.

As expected, London-born Sacha gamely tackled the waves and got soaked while fully clothed yet barefoot.

It's unclear exactly what secret project the talented trio - who've never worked together before - were filming in California.

Williams was cast in her first feature film, Jordan Peele's race-based horror movie Get Out, but principal photography commenced back on February 16.  

Love interests: The happily married co-stars also appeared to be getting intimate while laying on the beach for one cozy, sandy sequence

Love interests: The happily married co-stars also appeared to be getting intimate while laying on the beach for one cozy, sandy sequence

Weee! John - who welcomed his second daughter with wife Emily Blunt last month - appeared to have a blast splashing around in the surf
Weee! John - who welcomed his second daughter with wife Emily Blunt last month - appeared to have a blast splashing around in the surf

Weee! John - who welcomed his second daughter with wife Emily Blunt last month - appeared to have a blast splashing around in the surf

Superhero moment: Meanwhile, the 44-year-old Oscar nominee strutted around in a blanket cape while clad in the same outfit as Krasinski, plus a white cowboy hat

Superhero moment: Meanwhile, the 44-year-old Oscar nominee strutted around in a blanket cape while clad in the same outfit as Krasinski, plus a white cowboy hat

Committed funnyman: As expected, London-born Sacha gamely tackled the waves and got soaked while fully clothed yet barefoot
Committed funnyman: As expected, London-born Sacha gamely tackled the waves and got soaked while fully clothed yet barefoot

Committed funnyman: As expected, London-born Sacha gamely tackled the waves and got soaked while fully clothed yet barefoot

Mystery movie: It's unclear exactly what secret project the talented trio - who've never worked together before - were filming in California

Mystery movie: It's unclear exactly what secret project the talented trio - who've never worked together before - were filming in California

In April, Krasinski was cast in the title role of 2017 Amazon spy series Jack Ryan based on Tom Clancy's popular CIA hero.

And the Alice Through the Looking Glass star was last tied to Mandrake the Magician, the 2019 action/adventure story centered on the 1934 comic strip master illusionist.

Allison, John, and Sacha were also joined on the set by two African-American actors and a man in a red dressing gown resembling Jack Huston.

Could it be? Williams was cast in her first feature film, Jordan Peele's race-based horror movie Get Out, but principal photography commenced back on February 16

Could it be? Williams was cast in her first feature film, Jordan Peele's race-based horror movie Get Out, but principal photography commenced back on February 16

Could it be? In April, John was cast in the title role of 2017 Amazon spy series Jack Ryan based on Tom Clancy's popular CIA hero

Could it be? In April, John was cast in the title role of 2017 Amazon spy series Jack Ryan based on Tom Clancy's popular CIA hero

Could it be? And the Alice Through the Looking Glass star was last tied to Mandrake the Magician, the 2019 action/adventure story centered on the 1934 comic strip master illusionist

Could it be? And the Alice Through the Looking Glass star was last tied to Mandrake the Magician, the 2019 action/adventure story centered on the 1934 comic strip master illusionist

Quiet on the set! Allison, John, and Sacha were also joined on the set by two African-American actors and a man in a red dressing gown resembling Jack Huston

Quiet on the set! Allison, John, and Sacha were also joined on the set by two African-American actors and a man in a red dressing gown resembling Jack Huston

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