Have Kathy Hilton and Kyle Richards made up after a years-long family feud?

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As Kyle and her other sister, Kim Richards, make peace on The Real Housewives of Beverly Hills, the two women met up with their older half-sister, Kathy, to celebrate the birthday of Kim's daughter Whitney last weekend.

"Amazing evening celebrating with the #BirthdayGirl @WhittlesDavis @KathyHilton @KimRichards11 @KyleRichards18 & @FarrahBritt! Love my family," Kathy's oldest child, daughter Paris Hilton, wrote on her Instagram account, along with a photo of the women of her family.

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A photo posted by Paris Hilton (@parishilton) on Mar 16, 2016 at 11:44pm PDT

Kyle also shared a photo on her page, which included herself, Kim and Kathy.

During the first few episodes of The Real Housewives of Beverly Hills, Kyle was seen admitting that she and her sister Kathy weren't in a great place. Ahead of the July 2015 wedding of Nicky Hilton, Kyle revealed she was suddenly advised against attending the ceremony, even though her daughter, Portia Umansky, served as the flowergirl.

Eventually, Kyle was reinvited to the wedding, which she attended only with Portia and her oldest daughter, Farrah, due to her husband, Mauricio Umansky, and their other two children, Sophia and Alexia, being left off the guest list.

For more of the Hilton/Richards family, tune into The Real Housewives of Beverly Hills season six, airing on Tuesday nights at 9 p.m. on Bravo.

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Kathy hilton, Kim Richards, Kyle richards, Bravo, Reality TV, The Real Housewives of Beverly Hills