The sweetest thing! Bobby Cannavale kisses his partner Rose Byrne on the cheek during a romantic date at the Great Barrier Reef

They've kept a low profile since arriving in Australia for the Christmas and New Year holidays.

But Bobby Cannavale was happy to share a photo from his trip to the Great Barrier Reef in Queensland with girlfriend Rose Byrne on Friday.

The Boardwalk Empire star, 46, took to Instagram to post a candid snap while kissing his partner-of-four-years on the cheek.

Sweet! Bobby Cannavale shared a photo from his trip to the Great Barrier Reef in Queensland with girlfriend Rose Byrne on Friday

In the post, Bobby shows his affection to Rose, who smiles and looks radiant make-up free with a towel wrapped around her head.

He captioned the post: 'My beautiful lady @maryrosebyrne and I went to the Great Barrier Reef today!'

However, missing in the picture was the couple's 11-month-old son Rocco.

Happy family! The couple have been together for four years and have an 11-month-old son

The New York-based family is currently in Sydney, while Rose films the Hollywood adaptation of Peter Rabbit.

She is set to play to lead role of Bea and said she is 'thrilled' to be doing a movie for her son at the AACTAs in December.

'It is one for Rocco so I'm thrilled and I feel very lucky to be home and working,' she told The Daily Telegraph

Back home! The family has kept a low profile since arriving in Australia over the Christmas and New Year holidays

She stars alongside Margot Robbie, Star Wars actress Daisy Ridley and late night TV host James Cordon, who plays Peter Rabbit.

The film is produced by Will Gluck, who Rose previously worked with on the 2014 remake of the musical Annie, and will be released in 2018.

She previously said: 'I am curious about how it will be reinvented but it will be fun.'

Down Under: The New York-based family is currently in Sydney, while Rose films the Hollywood adaptation of Peter Rabbit

Make like Rose in a Radarte t-shirt

Rose Byrne does off-duty dressing style oh so well. Enjoying a casual outing with family, she dressed up a t-shirt with palm printed trousers and sandals for a look that was comfortable without sacrificing style.

Her tee is by Rodarte and it was covered with their signature tagline, 'J'aime Rodarte.' The grey top is casual enough to wear to the gym with leggings and sneakers or dress it up with some distressed denim and heels.

Celebs love this piece and now you can join the A-list by clicking right her exact tee at direct from the California-cool designer's website. And if you like the look but not the price, shop similar below.

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