Kim Kardashian's soon-to-be ex-husband Kris Humphries is still reeling from the news that Kardashian filed for divorce only 72 days after they were married. So much that he's cancelled an appearance in Las Vegas this coming weekend. The NBA player was scheduled to host a party at the Chateau Nightclub inside the Paris Hotel Saturday, but since Monday's report that his wife wanted out of the marriage, his rep confirmed to People that he's "devastated" and backing out of the event. 

Humphries is currently at home with family and friends in Minnesota, is "very sad" and "just processing it all," says a source. 

Kardashian, who took off to Australia Monday night to launch her Kardashian Kollection purse line, is "heartbroken," says another source. "But she's holding up okay. Neither of them wanted it to end this way."

(Photo: MARGO MILLER/MAXA/Landov)