'Hottest Australian import since the bloomin' onion!' Chris Pratt gushes over Margot Robbie as he guest hosts on Jimmy Kimmel Live

Chris Pratt filled in for Jimmy Kimmel on ABC's late night show Monday as the talk show host takes time off following his baby son Billy's successful heart surgery.

Pratt, 38, welcomed Australian star Margot Robbie, 27, to chat about her new movie I Tonya and couldn't help but gush over the blonde bombshell.

'She's the hottest Australian import since the bloomin' onion,' he told the audience, referencing a menu item on the Australian-themed casual dining chain Outback Steakhouse.

Different role: Chris Pratt filled in for Jimmy Kimmel on ABC's late night show Monday as the talk show host takes time off following his baby son Billy's successful heart surgery

Different role: Chris Pratt filled in for Jimmy Kimmel on ABC's late night show Monday as the talk show host takes time off following his baby son Billy's successful heart surgery

Guest host: Pratt, 38, welcomed Australian star Margot Robbie, 27, to chat about her new movie I, Tonya and couldn't help but gush over the blonde bombshell

Guest host: Pratt, 38, welcomed Australian star Margot Robbie, 27, to chat about her new movie I, Tonya and couldn't help but gush over the blonde bombshell

'She's the hottest Australian import since the bloomin' onion,' the actor told the audience, referencing a menu item on the Australian-themed casual dining chain Outback Steakhouse

'She's the hottest Australian import since the bloomin' onion,' the actor told the audience, referencing a menu item on the Australian-themed casual dining chain Outback Steakhouse

The Guardians Of The Galaxy star went on to gush over the blonde bombshell during their interview while asking her about growing up on Australia's Gold Coast.

After talking about the 'creepy crawly things' and snakes in the house, they got to chatting about how she started work at the age of 10 in a local restaurant.?

'I started out polishing cutlery then peeling potatoes,' the actress said. 'Then by 14, I was behind the bar.'

'Is that legal in Australia?' Pratt asked.

'No, it's not, Robbie replied. 'I got away with it.'

Then late night sidekick Guillermo arrived with bottles of Australian beer which Robbie promptly opened without the aid of an bottle opener by using the cap on one bottle to remove the cap on another bottle.

Smitten: The Guardians Of The Galaxy star went on to gush over the blonde bombshell during their interview while asking her about growing up on Australia's Gold Coast

Smitten: The Guardians Of The Galaxy star went on to gush over the blonde bombshell during their interview while asking her about growing up on Australia's Gold Coast

Refreshments: Kimmel sidekick Guillermo brought some bottles of beer on stage for Robbie and Pratt

Refreshments: Kimmel sidekick Guillermo brought some bottles of beer on stage for Robbie and Pratt

Neat hack: Robbie, who revealed she worked as a barmaid when she was 14, showed her trick for opening the beer bottles without an opener

Neat hack: Robbie, who revealed she worked as a barmaid when she was 14, showed her trick for opening the beer bottles without an opener

Also on the show was country music star Chris Stapleton promoting his album The Room Vol. 2.

Right after the opening monologue, Stapleton came on stage to do a 'wheel of cheesy duets' skit with Pratt.

The two performed the Dirty Dancing hit (I’ve Had) The Time of My Life! which ended with the two trying to recreate the famous scene where Patrick Swayze lifts up Jennifer Grey and twirls her around above his head.

Thanks to some special effects, ?they managed to pull it off.

Can sing too: Country music star Chris Stapleton was also on the show and joined Pratt in a duet of?the Dirty Dancing hit (I?ve Had) The Time of My Life!

Can sing too: Country music star Chris Stapleton was also on the show and joined Pratt in a duet of?the Dirty Dancing hit (I’ve Had) The Time of My Life!

Funny: The two recreated the famous scene where Patrick Swayze lifts up Jennifer Grey and twirls her around above his head thanks to a little special effects magic

Funny: The two recreated the famous scene where Patrick Swayze lifts up Jennifer Grey and twirls her around above his head thanks to a little special effects magic

Stapleton later came back on for a short interview before performing his single Millionaire.

Also joining Pratt was his Jurassic World co-star Bryce Dallas Howard.

She was there to help introduce an exclusive clip from the new trailer for Jurassic World: Fallen Kingdom that's set to drop on Thursday.

In the end, they showed just a couple of seconds from the teaser showing pratt cuddling up to a large dinosaur.

Other guest hosts this week as Kimmel spends time with this family are Tracee Elis Ross, Neil Patrick Harris and Melissa McCarthy.

Look who's here: Also joining Pratt was his Jurassic World co-star Bryce Dallas Howard who helped him  introduce a three-second clip from the new trailer for Jurassic World: Fallen Kingdom that's set to drop on Thursday

Look who's here: Also joining Pratt was his Jurassic World co-star Bryce Dallas Howard who helped him introduce a three-second clip from the new trailer for Jurassic World: Fallen Kingdom that's set to drop on Thursday

Big moment: Pratt was psyched as he came on set for the first time, fist pumping the air at the chance to host the ABC late night talk show

Big moment: Pratt was psyched as he came on set for the first time, fist pumping the air at the chance to host the ABC late night talk show

Earlier in the day, Pratt and Howard were spotted arriving at the Jimmy Kimmel Live studio on Hollywood Boulevard in Los Angeles.

While she changed into a black suit for her TV appearance, Howard arrived wearing a colorful floral-themed skirt paired with a black top and a casual black jacket.

The daughter of Hollywood director Ron Howard was bare-legged in black ankle boots and wore her long flame-red hair loose.?

Celebrity guest: Howard was spotted arriving at the Jimmy Kimmel Live studio on Hollywood Boulevard in Los Angeles earlier in the day

Celebrity guest: Howard was spotted arriving at the Jimmy Kimmel Live studio on Hollywood Boulevard in Los Angeles earlier in the day

Stylish: The daughter of Hollywood director Ron Howard wore a colorful floral-themed skirt paired with a black top and a casual black jacket and went bare-legged in black ankle boots
Stylish: The daughter of Hollywood director Ron Howard wore a colorful floral-themed skirt paired with a black top and a casual black jacket and went bare-legged in black ankle boots

Stylish: The daughter of Hollywood director Ron Howard wore a colorful floral-themed skirt paired with a black top and a casual black jacket and went bare-legged in black ankle boots

Pratt arrived for his hosting gig in an all-black ensemble.

He paired a dark finely checked cotton shirt undone at the collar with black jeans,

He rocked a pair of round gold-framed sunglasses.?

Hunky star: Pratt arrived for his hosting gig in an all-black ensemble and he rocked a pair of round gold-framed sunglasses

Hunky star: Pratt arrived for his hosting gig in an all-black ensemble and he rocked a pair of round gold-framed sunglasses

Casual style: He paired a dark finely checked cotton shirt undone at the collar with black jeans
Casual style: He paired a dark finely checked cotton shirt undone at the collar with black jeans

Casual style: He paired a dark finely checked cotton shirt undone at the collar with black jeans

Meanwhile, Pratt confirmed to the audience during the show that Kimmel's seven-month-old son Billy had successfully undergone a second scheduled heart surgery Monday morning.

The late night host is spending time with Billy and wife Molly and their three-year-old daughter Jane.?

Billy underwent open-heart surgery shortly after his birth in April and Kimmel spoke about his son’s life-saving procedure in an emotional opening monologue on his show, describing it as 'the longest three hours of my life.'

Taking care of family: Jimmy Kimmel is taking a week off from his ABC late night show after his baby son Billy underwent a second scheduled heart surgery Monday in Los Angeles

Taking care of family: Jimmy Kimmel is taking a week off from his ABC late night show after his baby son Billy underwent a second scheduled heart surgery Monday in Los Angeles

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