It's been a while since the formerly conjoined BFFs have been seen together -- but yesterday in L.A., Paris Hilton and Nicole Richie reunited in honor of their friend Casey Johnson.

The two, as well as Brandon Davis and Bijou Phillips, met up for a private memorial for the Johnson & Johnson heiress at Nicky Hilton's home.

Paris tweeted about the gathering later saying "We celebrated her life, we all miss and love her so much."

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