Hilton shared a few flicks of her own Saturday, showing off the teapot-shaped cake and Alice in Wonderland-themed treats at the aptly titled "Paris in Wonderland" bridal bash.
She also shared a snap alongside her mother and some of the heiresses' famous friends, who attended the star-studded event.
While wedding planning has been both "stressful and hectic" a source tells ET that the pair can't wait to get married.
"Paris and Carter can't wait to marry each other, but wedding planning has been a bit stressful and hectic. They want to really celebrate their love and are planning on hosting a bunch of events leading up to their actual wedding day," the source shared. "Paris hired Mindy Weiss to come on board and help with planning, and having Mindy's help has been a big stress reliever for Paris."
Just last month, Hilton spoke with ET's Rachel Smith at Saks Fifth Avenue's New York City Fashion Week party where she dished on her upcoming wedding and revealed that she officially said "I do" to the dress of her dreams.
"Yes, I have the dress," Hilton gushed. "The wedding is very soon, [in] a few weeks. We are filming it for my new show."
Hilton and Reum got engaged in February, after a year of dating. The heiress announced her engagement just after Valentine's Day and on her 40th birthday!
"When you find your soulmate, you don’t just know it. You feel it. 💫 My love & I have been together since our first date, and for my birthday, he arranged a special trip to tropical paradise. 🏝️ As we walked to dinner along the beach, Carter led us to a cabana adorned with flowers and dropped to one knee. 💍 I said yes, yes to forever ❤️ There’s no one I’d rather spend forever with. ✨," Hilton posted to Instagram along with a video. "Here's to Love - the Forever Kind 💋"
"I have gotten the unique opportunity to get to know the real Paris on a daily basis just the two of us during these past 15 months and I couldn't be more excited and lucky to have her as my future wife and partner," the 40-year-old groom-to-be told People, who was first to report the news. "She shines with her kindness, work ethic, authenticity and her voice in making the world a better place and she will do the same as a future mother and wife."