Green and gold at heart! Rose Byrne spends the day out with partner Bobby Cannavale, as their 11-month-old son Rocco sports a Wallabies onesie

They're the acting couple who are usually based in New York.

But it seems Australian actress Rose Byrne, 37, her partner, actor Bobby Cannavale, 46, and their son Rocco are settling into the Australian way of life.

The family were spotted out at a Sydney park having a barbecue lunch with their friends and enjoying the summer sun as they celebrated Australia Day last Thursday.

All smiles: Rose Byrne, 37, her partner, actor Bobby Cannavale, 46, and their son Rocco spent Australia Day at the park

Rose and Bobby looked happy and loved up as they joined in the celebrations.

Meanwhile, their 11-month-old son was practising his walk as he sported a baby-sized green and gold Wallabies onesie - supporting the Australian Rugby Union team.

The Sydney-born actress looked effortless and chic in her floral print, peach toned maxi dress and paired her summer outfit with a pair of strappy sandals.

Effortless: The family were spotted out at a Sydney park having a barbecue lunch with friends

Look at him go! The proud parents watched their little boy walk around

Little wallaby supporter: Rocco was seen playing with a green ball as he sported the Wallabies green and gold onesie 

Green and gold: Their son quickly runs back their other way

Helping hand: Rose held her son as he walked around the park 

Relaxed: The couple held hands as they celebrated Australia Day at the park with their friends

Having a laugh: Bobby and Rose spotted smiling as they sat at the park

Rose accessorised with a sun-safe straw hat and dark oversized sunglasses.

Bobby cut a casual look with a navy blue polo shirt, red shorts and matching sneakers.

The Ant-Man actor donned a New York Yankees baseball cap and a pair of dark aviator style sunglasses.

Hey there: Bobby cut a casual look with a navy blue polo shirt, red shorts and matching sneakers

Can I try a bit? The New Jersey-born actor also dug into some of the Aussie favourites, while Rocco tried to get a bight of the sausage sizzle

Fair shake of the sauce bottle: She slathered her sausage sizzle with tomato sauce 

Yum: The actress enjoy tucking into the iconic food including sausage roll, sausage sizzle and meat pies

The Bridemaids star appeared to enjoy tucking into the iconic food, including sausage roll, sausage sizzle and meat pies.

Her New Jersey-born beau also dug into some of the Aussie favourites.

Rose has been in Australia for the past few months with her family as she films the live-action version of children's classic Peter Rabbit.

Delish: The family spent the day with their friends at the park

Tucking into Aussie favourites: Rose has been in Australia for the past few months with her family

You missed a spot: The Sydney-born actress looked effortless and chic in her floral print, peach toned maxi dress

Chat: The Bridesmaid actress paired her summer outfit with a pair of strappy sandals.

Mummy's boy: Rocco wriggling in his mother's arms as she hold him tight

Playing: The Insidious actress recently claimed she is 'thrilled' to be doing a movie her young son can enjoy

She will star in the lead role of children's writer Beatrix Potter.

The Insidious actress recently claimed she is 'thrilled' to be doing a movie her young son can enjoy.

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

At the park: She was spotted picking and carry 11-month-old Rocco

Dad's pal: The Ant-Man actor donned a New York Yankees baseball cap and a pair of dark aviator style sunglasses

Follow me: Rose follows Rocco who is holding her hand and leading her

Partners: The happy couple have a laugh and share a kiss 

Nap time: Rose takes her son aside in his pram to feed him

Cute: Rose and Bobby have been in Australia for the past few months 

Feeding time: She is films the live-action version of children's classic Peter Rabbit, where she will play the lead roll of children's writer Beatrix Potter

No comments have so far been submitted. Why not be the first to send us your thoughts, or debate this issue live on our message boards.

By posting your comment you agree to our house rules.

Who is this week's top commenter? Find out now