INSIDE PARIS HILTON AND CARTER REUM'S EPIC BACHELORETTE AND BACHELOR WEEKEND IN LAS VEGAS

Paris Hilton and Carter Reum kicked off their "action packed weekend" in Sin City on Friday, Oct. 8, as they celebrate their joint bachelorette/bachelor party.

"Nothing in This World" could top Paris Hilton and Carter Reum's latest celebration.

The couple, who got engaged in February after dating for over a year, is one step closer to becoming husband and wife. On Friday, Oct. 8, the reality TV star and entrepreneur took Las Vegas by storm as they kicked off their joint bachelor and bachelorette party.

The duo's loved ones joined in on the

fun, including Kathy Hilton, Nicky Hilton, Carter's brother Courtney Reum and several others.

Paris and Carter have "an action-packed weekend with a full schedule." For their first list of festivities, the insider reveals Paris and Carter's crew enjoyed a night out at two Sin City hot spots: Area15 and ResortsWorld Las Vegas.

"After dinner, the entire group went to Area15 just off the Strip," says the source. "Once they returned to Resorts World, the couple and their guests headed to Zouk Nightclub where Tiesto was the headliner."

An insider adds, "To no one's surprise, Kathy Hilton was the life of the party and joined Tiesto in the DJ booth. She was having so much fun!"

As fans of the couple know, their joint parties come less than a month after they hosted a lavish engagement party at New York City's private club Zero Bond.

On Sept. 30, the Paris in Love star gushed over her romance, writing on Instagram, "Only a few more months until we're married."

"it's been the most exciting chapter of my life building our lives together and creating our future," she continued. "I'm so grateful that we are true partners and best friends. Thank you for all the ways you uplift and inspire me to be a better me. I love you so much!"

"I'm very excited just to share this next chapter of my life," she shared. "I'm so in love. I found my soulmate, I'm just ready for this next phase."

While the socialite has yet to reveal the exact date she and Carter plan to tie the knot, she told Jimmy Fallon that same month that her wedding will be "a three day affair."

"We have a lot happening," she said. "Lots of dresses, probably 10. I love outfit changes."

But before Paris and Carter walk down the aisle, take a look at their epic bachelor/bachelorette parties in our gallery below!

Sexy Selfie

On Friday, Oct. 8, Paris snapped a selfie of her and Carter's joint bachelor and bachelorette party in Las Vegas.

Staying Hydrated

Nicky Hilton showed off the adorably personalized drinks for her sister's celebration. "Paris's Bachelorette" and "Drunk in Love" were fittingly emblazoned on the bottle.

Blinding Lights

Paris lit up the room in a neon yellow dress while at Area15 on the Las Vegas

Strip.

Hot Wheels

The engaged couple stuck a pose on Courtney Reum's Instagram, as they enjoyed an afternoon outing with their nearest and dearest.

Paris-Approved

"ResortsWorld Las Vegas for our beautifully decorated palace!" Paris captioned her Instagram Story. "Perfect play to stay for our joint bachelorette/bachelor party."

Lavish Decor

Taking to Instagram Stories on Saturday, Oct. 9, Nicky shared a behind-the-scenes photo of Paris and Carter's lavish decorations.

Pretty in Pink

On Oct. 9, the Simple Life alum got all dolled up in a plunging hot pink dress to celebrate another night in Sin City.