AceShowbiz -

Kim Richards has taken a leave from rehab for a big family gathering. After attending the bridal shower of her daughter Brooke Brinson a couple weeks ago, the Bravo reality TV star traveled to Mexico over the weekend to attend Brooke's wedding with Thayer Wiederhorn.

The family gathered at the One & Only Palmilla in Cabo San Lucas on a sunny Saturday, May 23 for the big day. Brooke and her beau walked down the aisle barefoot. The bride's cousins, Paris Hilton and Nicky Hilton, were among the bridesmaids at the beach nuptials.

#BridesMaids 💖

A photo posted by Paris Hilton (@parishilton) on May 23, 2015 at 6:50pm PDT

Kim's sister Kyle Richards, also a member of "The Real Housewives of Beverly Hills", was in attendance as well. According to TMZ, Kim who checked into rehab after getting arrested for public intoxication last month was accompanied by her sober coach and stayed away from alcohol during the bash.

Mr. & Mrs Wiederhorn 💍🎂👰 #wiederwedding

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A photo posted by Nicky Hilton (@nickyhilton) on May 23, 2015 at 7:19pm PDT

Such a beautiful moment between The bride & mother of the bride. ❤️ Love you @KimRichards11. Congratulations @BrookeWiederhorn & @ThayerWiederhorn. #SoulMates 💯 #WiederWedding

A video posted by Paris Hilton (@parishilton) on May 24, 2015 at 5:58am PDT