Spencer Pratt Posts Video of 'Family Outing' with 'Cousin' Chris Pratt and Wife Heidi Montag

An MMA match-up is an unconventional place to have a family reunion, but Chris Pratt and Spencer Pratt went ahead with it anyway.

On Sunday, the reality star, 35, and movie star, 39, posted an Instagram video together — along with Spencer’s wife, Heidi Montag, and almost 16-month-old son, Gunner Stone — claiming to be cousins. (Though they share a last name, they’re not related.)

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Pratt family outing @prattprattpratt

A post shared by SPENCER PRATT (@spencerpratt) on Jan 26, 2019 at 6:45pm PST

“So good when two cousins can just get out and enjoy life,” says Chris, who’s engaged to Katherine Schwarzenegger, in the clip.

RELATED: Why Chris Pratt and Fiancée Katherine Schwarzenegger ‘Didn’t Have to Take Things Slowly’: Source

“This is a family outing,” adds Spencer before Chris jokes that he hasn’t seen his “nephew … since the birth.”

“He’s grown so big!” the Parks and Recreation alum quips as he touches the little boy’s arm.

Heidi Montag, Spencer Pratt and son Gunner
Heidi Montag, Spencer Pratt and son Gunner

“Pratt family outing,” Spencer captioned the post.

Heidi, who was featured briefly in the selfie-style video, recently got emotional on Instagram when celebrating Gunner’s first birthday.

In an trio of clips, The Hillsstar shared to her Instagram Story in October, she expressed her overwhelming gratitude.

RELATED:Gunner Steals the Show! Spencer Pratt and Heidi Montag’s Baby Boy Joins Them on VMAs Red Carpet

“I decided not to wear makeup today because I’m a total mess,” said Heidi, 32, continuing through tears, “God, it’s so amazing. Gunner is just such a blessing and I can’t believe that it’s already been a year. Wow, what a day.”

Heidi Montag and son Gunner
Heidi Montag and son Gunner

“It’s been the most amazing and most challenging year of my entire life,” she added with a laugh, wiping away tears. “It’s just been so great, every moment. I can’t believe he’s already 1! … Bit emotional today, it’s a big day. And I’m just really thankful. I hope you guys are all having a great day. And I’m just going to sit here crying.”

Heidi and Spencer spoke to E! News in July about their hopes for expanding their family in 2019.

“I’d love a girl or a boy,” she said. “I love having a son. It’s so much fun. So if we have another boy, we’ll probably have three [kids].”

Joked Spencer, “A psychic did tell us we’re gonna have twins, so watch out, Mary-Kate and Ashley.”

Chris also recently revealed his hopes for his future family with his fiancée, 29. He’s already father to 6-year-old son Jack with ex Anna Faris, 42.

“The future? Oh. Lots of kids,” he told Entertainment Tonight on Friday.

Chris Pratt and Katherine Schwarzenegger
Chris Pratt and Katherine Schwarzenegger

The Lego Movie actor added that he also plans to cut back on working.

“More time spent enjoying life,” he told the outlet. “I always want to be that guy that works to live, not lives to work. I think [I want to spend] just a lot of time at the farm and a lot of time catching a lot of fish and seeing lots of sunsets.”