Scarlett Johansson flashes giant rock

Scarlett Johansson flashes giant rock on her engagement finger as she and Romain Dauriac take romantic stroll 

Her ex husband Ryan Reynolds has already moved on with new wife Blake Lively, and now Scarlett Johansson appears to be following suit with her French beau. 

The 28-year-old looked nothing like the blonde bombshell we know her to be as she wandered through New York's East Village with her French journalist boyfriend, Romain Dauriac, but she was sporting something glamorous... a giant pear-cut diamond ring. 

Johansson scraped her blonde hair back into a tight ponytail and slipped into black jeans, a black puffa jacket and some heavy-duty black and brown boots which almost detracted from the flashy rock (worn on her engagement finger).

Low-key: Scarlett Johansson and her boyfriend, French journalist Romain Dauriac, stopped by an ATM and picked up some coffee before heading to a tattoo parlour in New York on Monday 

Her 30-year-old boyfriend looked a little more chic - cliche alert - in a bright green jacket, beanie hat, brogues and fashionable oxblood socks. 

The duo headed to a cash machine before picking up some coffee and making their way to a tattoo parlour. 

She's already amassed a fairly extensive collection of body art, and Scarlett would certainly be the type to mark an engagement with a new permanent mark. 

Last year she had a horseshoe Inscribed with the phrase Lucky You inked onto her ribcage. 

The Hitchcock actress commissioned French tattoist and graffiti artist Fuzi Uvtpk to create the inking for her after recently attending an exhibition of his work at Le Salon.

Just the two of us: It was a quiet day for the actress and her Gallic writer 

Dressing down: Scarlett's casual look didn't quite work, but she looked happy enough 

Earlier in the year year, the star unveiled a tattoo tribute to New York City on her wrist. 

Although at a first glance the piece looks like a bracelet, the words I Heart NY can clearly be seen inscribed onto the rosary bead charm.

Scarlett also has a sun rising over the sea design on her left forearm, while on her ankle she has two circles interlinked with the letter A.

The blonde beauty has previously said her tattoos make her 'happy' but she prefers that the meanings behind them 'remain private.'

Bombshell: Scarlett at the Met Costume gala last May 

Scarlett has most recently appeared in new movie Hitchcock, which centres on the relationship between Hitchcock and wife Alma Reville, played by actress Helen Mirren, during the making of the director's iconic 1960 thriller, Psycho.

The movie sees Johansson fill the role of Janet Leigh, who was famously 'killed' in the shower scene for her Golden Globe-winning performance as Marion Crane.

Director Sacha Gervasi previously said: 'The extent to which Scarlett was able to channel Janet [was] a real surprise. She brought it in such a way that no one really anticipated.'