Kim Richards 2015 - It seems that Kim Richards was able to sneak out of rehab and enjoy a brief Mexican getaway on Saturday. According to TMZ, the 50-year-old "RHOBH" star attended her daughter Brooke Brinson's beach wedding in Cabo, over the weekend.

In spite of the fact that her short visit to Mexico this 2015 was just a night out before returning to rehab, Kim Richards certainly enjoyed the celebration. Kim's sister, Kyle Richards, who has had issues with Kim in the past, also attended the wedding with husband Maurcio Umansky and their daughters, E! News confirmed.

Also present at the wedding were Paris and Nicky Hilton. In a video captured from Paris' Snapchat, Kim Richards, who has been in a treatment facility for close to a month this 2015, was spotted smiling and even cheering with family and friends as they prepared for the wedding ceremony.

While most of the Hiltons were present at the One and Only Palmilla in Cabo San Lucas, Mexico on May 23, one special guest was unable to attend Brooke's wedding to Thayer Wiederhorn. The said guest was Brooke's dad, Monty Brinson, who is currently battling stage IV cancer, Daily Mail revealed. Through an Instagram post, Monty explained why he wasn't able to attend the ceremony.

"For health reasons I wasn't able to attend, but I've still been blessed that I was able to walk her down the aisle in August," Monty wrote on Instagram. "All the family and friends will be there but I will to in spirit."

"My prayers have been answered with my daughter having her dream wedding what more could a father ask for... I love you Brooke," he added. "Now have a beautiful wedding and just know I'm right there with you."

Meanwhile, Kim Richards, who voluntarily checked herself into rehab this 2015 after her drunken night at the Beverly Hills Hotel that her to her arrest and criminal charges, did not drink any alcoholic beverages during the party. She also returned to rehab right after the celebration.

The 2015 wedding in Mexico wasn't the first time Kim Richards abandoned rehab since she also previously left the facility to attend Brooke's bridal shower, Us Weekly noted. (For more photos and videos of the wedding, check out Paris Hilton's Instagram account.)