While the childhood friends have publicly feuded for the last 18 months, Hilton and Richie enjoyed a dinner together at Los Angeles eatery, Dan Tana's Steakhouse, on Sunday and left announcing their reaffirmed friendship, said E! Online.
In Apri 2005, Hilton openly aired her animosity towards Richie, daughter of singer Lionel Richie.
"It's no big secret that Nicole and I are no longer friends," the heiress said. "I will not go into the details of what happened. All I will say is that Nicole knows what she did, and that's all I am ever going to say about it."
The Web site said that the newly rekindled friends also spent enjoyed a sleepover at Hilton's Hollywood Hills home with their numerous dogs.