Despite their rumored longtime feud, Kim Kardashian and Paris Hilton reunited over the weekend.

The reality stars were both in Ibiza, Spain to celebrate Givenchy Creative Director Riccardo Tisci's 40th birthday. The two were photographed laughing together and both shared the moment on their Instagram pages.

If you thought Kardashian was thinking, "Don't be jealous of my career," or that Hilton was saying, "You used me," you are wrong. The stars seemed to let go of any problems they had.

"Reminiscing about the 1st time we went to Ibiza in 2006! @parishilton it was so good to see you & catch up!! Loves it lol," Kardashian, 33, wrote as her caption.

Subsequently, Hilton, 33, wrote, "So much fun with @KimKardashian this weekend at @AmnesiaIbiza. The first time we ever came to this magical island was together. Such an amazing trip! Great catching up with you too beautiful! #Regram."

The Keeping up with the Kardashians star and Hilton were once inseparable -- Kardashian was even the socialite's assistant. But, when Kardashian shot to fame in 2008, her friendship with Hilton went downhill. That year, Paris famously said that Kardashian's famous butt was similar to "cottage cheese inside a big trash bag" during a radio show.

In 2011, Hilton also appeared on Good Morning America and seemed uncomfortable when she was asked whether or not women like Kardashian are "overshadowing" her. "No, not at all," she replied before she stormed off.

It's nice to see the two stars together again!