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Proud grandpa Stephen Baldwin is enamored with his daughter Hailey Bieber and husband Justin Bieber's baby boy Jack Blues Bieber.

In fact, the Usual Suspects actor had just two words to describe the couple's first child and his first grandson.

"He's just, I don't want to say too much," Stephen gushed to People Sept. 13 at the magazine's 50th birthday celebration at Chain House in Los Angeles, "He's unbelievably cute."

The 58-year-old added, "And the world will see him soon."

The model, 27, and Justin, 30, had announced Jack's birth Aug. 23 on social media.

Alongside a closeup pic of Hailey holding their son's foot , the "Peaches" singer wrote, "WELCOME HOME."

This is the second grandchild for Stephen, whose older daughter Alaia Baldwin, 31, gave birth to her and her husband Andrew Aronow's daughter Iris in August 2020. The Bio-Dome actor, who lives in New York, said he had initially traveled to Los Angeles to celebrate his granddaughter's fourth birthday and to launch his new podcast. 

"And of course," he added, "Here comes Jack Blues Bieber."

Meanwhile, Justin and Hailey just marked another major milestone—they celebrated their sixth wedding anniversary Sept. 14.

Hailey shared several images to mark the occasion—pics of gold balloons bearing the word "Love you," pink candles laid in between a bed of flowers and a printed photograph of her and Justin kissing placed on it.

"6 years," she wrote on her Instagram Stories. "Love you baby."

Stephen was the one who introduced the pair, backstage at Today in 2009 when the Rhode founder was almost 12 and Justin was 15.

"My name is Steve Baldwin and this is my daughter, Hailey," the actor told the "Baby" singer at the time, gesturing toward the model, who said, "Nice to meet you."

Stephen added, "We've been enjoying your music."

Look back at Justin and Hailey's cutest pics together...

The two celebrated the milestone in September 2024, three weeks after welcoming their first child, son Jack Blues Bieber.

The Biebers welcomed their first child together, Jack Blues Bieber, they announced in August 2024.

Justin Bieber and Hailey Bieber, wearing Jordan Road earrings, shared this kissing photo on their Instagram pages in honor of their fifth wedding anniversary.

"To the most precious, my beloved." Justin wrote on Instagram. "You have captivated my heart. I know from the depths of my soul down to my bones that this journey with you will only exceed our wildest expectations. So let's keep dreaming big baby. Cheers to forever and ever. I love you with every fiber of my being. HAPPY 5TH YEAR ANNIVERSARY!!!"

"5," Hailey wrote on her Instagram to celebrate their fifth anniversary. "I love you."

The couple was over the moon in love as they got ready to take flight.

Justin and Hailey looked so darn cute cuddled up together!

The two cuddled up during an outing at the lake.

Justin and Hailey couldn't keep their hands off each other while making out in the water.

In July 2018, Justin confirmed his engagement to Hailey in a lengthy Instagram post. "Hailey I am soooo in love with everything about you! So committed to spending my life getting to know every single part of you loving you patiently and kindly," he captioned this photo. "My heart is COMPLETELY and FULLY YOURS and I will ALWAYS put you first," he continued. "You are the love of my life Hailey Baldwin and I wouldn't want to spend it with anybody else. You make me so much better and we compliment each other so well!! Can't wait for the best season of life yet!"

He also shared this shot as part of the engagement announcement, writing, "It's funny because now with you everything seems to make sense!" He added, "My goodness does feel good to have our future secured! WERE GONNA BE BETTER AT 70 BABY HERE WE GO!" Aww!

The Biebers sharing a sweet smooch. "Hunny buns punkin," Justin captioned the photo. 

The two enjoyed a very sweet smooch to celebrate their love. 

Hailey posted this sweet pic in honor of her hubby's 25 birthday. 

"My lips get jealous of my arms cuz I can hold you with them," Justin shared. We're pretty jealous too! 

Could these two be any cuter?! "My only bubba," Hailey shared about the sweet pic. 

It may be cold outside, but they know how to keep each other warm. 

This photo might be blurry, but one thing is clear—they're so in love! 

Hailey supporting her man in the studio while he does what he loves. 

Justin's pouty pucker is courtesy of his vacation ending. Very relateable! 

Once again, these two are absolutely slaying the relationship goals! "Go best friend that's my best friend," Justin captioned the pic. 

The couple who prays together, stays together. "I know for me this conference came at the exact time I needed it, I believe God is THAT amazing and faithful that he brings us the right words during the season that we need it the most," Hailey captioned the shot with her hubby.

Amazing views for the gram. The sunset is also pretty nice! 

One of their first official shots as husband and wife! 

Even in this photo taken years ago, this pair was picture-perfect.

In January 2016, the two decided they weren't going to hide their romance any longer, and this photo of them kissing quickly circulated throughout the internet.

Hailey decided to lend a helping hand in January 2015 when she gave Justin her hair-tie right off her wrist!

They might not have been together when this photo was taken in June 2015, but they sure did look good together!

In this photo from May 2015, the "Baby" singer rocked a fake mustache while the model sweetly posed behind him.

In December 2014, Kendall Jenner joined Justin and Hailey for a Nerf gun night!

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