What happens in Vegas…definitely ends up on Instagram.

Christina Haack may have officially turned 42 on July 9, but the Flip Off star saved the fireworks for a glitzy, whirlwind celebration in Las Vegas—with a guest list that turned heads and proved that blended families really can win big.

In a move few exes could pull off, Haack was joined not only by her boyfriend, Tech CEO Christopher Larocca, but also by her ex-husband Tarek El Moussa and his wife, Selling Sunset alum Heather Rae El Moussa, for an unforgettable 24-hour escape to the desert.

And while the champagne was flowing and the slots may have spun, it was the smiles, the selfies, and the striking harmony among the modern family that stole the show.

One Night in Vegas, A Lifetime of Memories

Heather Rae, never one to shy away from a social media moment, dropped a photo carousel on Instagram Monday, July 21, teasing fans with a sneak peek into the birthday bash. Her caption? Pure cheek:

“What happens in Vegas…ends up on Instagram 😏🎲🍾”

The photos showed the crew in full celebration mode—swimwear by day, glam by night, clinking glasses poolside, and singing around a slice of birthday cake as Christina made a wish. Accompanied by Katy Perry’s “Waking Up in Vegas,” the vibe was exactly what fans have come to expect from reality royalty: stylish, spontaneous, and totally Insta-worthy.

Haack posted her own tribute to Larocca during the trip, sharing a sweet photo of the couple with the heartfelt caption:

“This guy. Always making everything fun and EASY. Thank you for being you. Infinite gratitude ❤️”

Clearly, love was in the air—and not just in the romantic sense.

From Divorce Drama to Birthday Cheers

To the outside world, this kind of celebration might’ve once seemed impossible. Christina and Tarek were married from 2009 to 2016, a relationship that played out publicly on HGTV’s Flip or Flop—and later in the tabloids during their highly publicized divorce.

Fast forward to 2025, and it’s clear that time, growth, and maturity have created something few thought possible: a healthy, friendly co-parenting team that knows how to party, too.

Haack and Tarek co-parent their two children, Taylor, 14, and Brayden, 9, while Tarek and Heather welcomed their son, Tristan, in early 2023.

“It’s Crazy How Far We’ve Come”

One of the most surprising (and heartwarming) parts of the birthday celebration? The sisterly bond now shared between Christina and Heather Rae—a friendship that was once the subject of gossip columns but now feels like a masterclass in blending modern families.

“Happy birthday @christinahaack,” Heather Rae wrote in her July 9 tribute. “It’s crazy how far we’ve come & most will never understand how we are friends. I’m grateful for our relationship & our ability to rise above the noise! Cheers to you & can’t wait to celebrate you! Xo.”

The message, while celebratory, didn’t shy away from acknowledging the road they’ve traveled. From cautious beginnings to mutual respect—and now shared vacations—it’s a transformation fans didn’t expect but are applauding.

Christina echoed the sentiment, commenting on the Vegas post:

“Too much fun and perfect song choice 😂🎰❤️🍾🥂”

Inside the Glam Getaway

While the exact hotel location was kept under wraps, the birthday crew gave fans just enough peeks into their sun-soaked, champagne-poured celebration to fuel plenty of social buzz.

Among the highlights:

A sun-drenched poolside hangout, with everyone in beachwear and toasting cocktails.

A private dinner, where the crew sang “Happy Birthday” and cheered as Haack blew out candles.

Matching smiles all around, with not a hint of awkwardness despite the complex relationship history between the guests.

It’s not every day you see an ex-husband, his new wife, and your current boyfriend all laughing over rosé in Vegas.

The Man Beside Her: Christopher Larocca

Though he tends to keep a lower profile than his reality-star girlfriend, Larocca has increasingly appeared by Haack’s side in recent months—always steady, supportive, and smiling.

Haack has previously described Larocca as “peaceful and grounding,” a calming presence in her whirlwind life of filming, real estate, and raising kids.

This trip further solidified his role not just as her partner, but as someone fully embraced by her extended family circle.

“He makes everything easier,” she wrote in a birthday tribute. “I’m so thankful for this chapter.”

A Birthday That Broke the Internet—But Not the Peace

With over 3 million combined likes, shares, and views across Instagram and TikTok, the Vegas birthday bash made a splash—but not for drama or controversy. Instead, fans were praising the maturity, love, and genuine connection that unfolded between this very modern, very blended family.

“I wish more exes could be like this. They’re showing how it’s done,” one fan wrote.

“So much respect to Christina, Tarek, and Heather for making this work. And happy birthday, Queen!” said another.

Even skeptics found themselves softened by the joy on everyone’s faces.

The Haack-El Moussa Family Model

In a culture where celebrity breakups often spiral into lawsuits, estrangement, or tabloid feuds, Christina Haack and Tarek El Moussa have quietly flipped the narrative.

Through shared parenting, open communication, and letting go of the past, they’ve created a model that prioritizes children, peace, and celebration over competition.

“We’ve actually been close for a while now,” Haack told PEOPLE in 2024. “We communicate about the kids all the time. [Heather’s] an amazing stepmom—the kids love her so much.”

Final Toast: Here’s to Chapter 42

Christina Haack may be entering her 42nd year, but if this Vegas getaway was any indication, she’s doing it on her terms—surrounded by love, laughter, and a community of people who’ve evolved together in the spotlight.

It wasn’t just a party. It was a statement: that peace is possible, growth is real, and the best birthday gift is a circle of people who show up—with champagne in hand and no baggage in sight.

Now that’s worth celebrating.