Are they BFFs again?

The founder of Playboy, Hugh Hefner, died at the age of 91 today. The news was announced in a statement from Playboy Enterprises Inc that revealed he died from natural causes. Since it was revealed, many fans and celebs alike are paying tribute to him on social media. And Paris Hilton and Kim Kardashian are no different. Kim first paid respects to him on Twitter, saying: "RIP to the legendary Hugh Hefner! I’m so honored to have been a part of the Playboy team! You will be greatly missed! Love you Hef! Xoxo"

RIP to the legendary Hugh Hefner! I’m so honored to have been a part of the Playboy team! You will be greatly missed! Love you Hef! Xoxo

— Kim Kardashian West (@KimKardashian) September 28, 2017

Minutes later she tweeted again, this time saying that her and Paris were remembering all the love they had for Hugh. "Paris & I are reminiscing about the Playboy parties at the mansion & how much we love Hef. She’s texts me the perfect Hef emojis." We have to say, Paris got the emojis spot on with this:

Paris & I are reminiscing about the Playboy parties at the mansion & how much we love Hef. She’s texts me the perfect Hef emojis ???????????

— Kim Kardashian West (@KimKardashian) September 28, 2017

???????????

— Kim Kardashian West (@KimKardashian) September 28, 2017

Paris then said: "Going to miss Hef! And yes so many fun times with you at the #PlayboyMansion."

Going to miss Hef!?And yes so many fun times with you at the #PlayboyMansion. ? #LingerieParty

— Paris Hilton (@ParisHilton) September 28, 2017

So sad to hear the news about @HughHefner. ? #RIPHef pic.twitter.com/IQiEYhMfvf

— Paris Hilton (@ParisHilton) September 28, 2017

She also tweeted out a cover of the mag she featured on the cover.

Love you Hef ? #Legend #RIPHEF pic.twitter.com/QOEJJ4cxO9

— Paris Hilton (@ParisHilton) September 28, 2017

It looks like Kim Kardashian and Paris Hilton are back being BFFs (and we kinda love it).