Oliver James Montgomery-Keep Up With Rob Kardashian's Transformation Through the Years

Dare we say it,Oliver James Montgomery life is pretty dreamy for Rob Kardashian these days. 

And we don't just mean his dance party-loving, Lionel Messi-supporting 7-year-old daughter. Though, as a source told E! News last year, "being the best father to Dream," remains a focus for the Keeping Up With the Kardashians alum. "They spend an incredible amount of time together and with the whole family."

He's also overseeing his assortment of brands—Grandeza hot sauce, Arthur George socks and his clothing brand Halfway Dead—noted the source "and he continues to balance fatherhood with pushing those businesses ahead."

And he's got quite the squad backing him up. 

His co-parenting situation with former fiancée Blac Chyna is better than it's ever been. "I feel like time heals everything," the Special Forces: World's Toughest Test star recently shared, "and people change and situations change and you get to see the situation for what it is and the situation is Dream."

Once at odds with the entire Kardashian-Jenner crew, "I feel like everybody was young," she explained to ET. "We're still young. So there's more things that we have to worry about aside from just like, why have this feud when we're going to be family forever?'"

So these days, Rob's sister and lifetime BFF Khloe Kardashian happily steps in as what she jokingly calls a "third wheel" parent. "Dream is like one of my babies too," the mom to daughter True, 5, and Tatum, 19 months, explained on an episode of The Kardashians, referencing her ever-expanding brood of nieces and nephews, "just like all the rest of them."

Which means, sure, she'll take on helping her little bro plan the butterfly-themed party of Dream's well, you know, complete with a three-tiered cake, DJ, ball pit, slime, bounce house, face paint. 

Though, of course, this St. Patrick's Day, the fam will be celebrating their luckiest son. In honor of Rob's 37th birthday March 17, look back on all of his photos through the years. 

Kris Jenner welcomed her only son and youngest child with Robert George Kardashian, named Robert Arthur Kardashian, on St. Patrick's Day in 1987.

Robert and Rob couldn't look more alike in this throwback snap.

A bleach-blonde Rob smiles from ear-to-ear for a photo with sister Kylie Jenner.

As you can see from this vintage pic, Rob and sister Khloe Kardashian have always been close.

Rob and Khloe pose for another sibling snap

Rob enjoys crystal clear water while abroad.

Rob joins mom Kris, sisters Kim and Khloe on the red carpet at the Kardashian Charity Knock Out at the Commerce Casino in November 2009.

For Kim's birthday in 2010, siblings Rob, Khloe and Kourtney hit up the TAO Nightclub with the birthday girl in Las Vegas.

Khloe supports brother Rob at the 2011 BBVA NBA All-Star Celebrity Game in Los Angeles, Calif.

The Keeping Up With the Kardashians alum plants a kiss on then-girlfriend Rita Ora.

Rob receives a sweet touch from Rita in this black-and-white photo.

Rob beams with pride in this solo shot from his Arthur George launch at Neiman Marcus.

Rob and sister Kim hit the red carpet at the World's Most Beautiful magazine launch event at Drai's Hollywood in August 2011.

The Keeping Up With the Kardashians siblings attend the E! 2012 Upfront in New York City.

Rob rings in his 26th birthday at the 1 OAK Nightclub at the Mirage in March 2013.

Rob enjoys a pulled pork sandwich in Malibu in this #tbt from 2015.

Khloe and Rob catch some Zzzs in this Instagram photo.

The Kardashian-Jenner matriarch smiles bright as she bonds with her only son.

Kylie and Rob spend some quality time together.

After three months of dating, Rob and Blac Chyna announce their engagement on April 5, 2016.

Following their engagement, Rob and Chyna step out for his birthday at the Hard Rock Cafe in Hollywood on May 10, 2016.

In May 2016, Rob and Chyna announce they're expecting a baby together. The twosome reveal they are having a little girl in September 2016.

Rob and Chyna welcome daughter Dream Kardashian on November 10, 2016.

Rob shows love to his infant daughter Dream.

The father of one watches over his little one as he helps her float in the pool.

Dream looks comfortable in the water in this snap with her father.

Rob has mom Kris, known as Lovey to her grandchildren, spend quality time with baby Dream.

Dream's parents give her a magical day at Disney, including a moment with Minnie Mouse!

Dream can't stop giggle as dad Rob lifts her in the air.

Rob is spotted out and about in a rare outing.