Bruce Jenner covers the new issue of People Magazine, and while he will be revealing all the details of his transition from male to female later this spring during a sit-down with Diane Sawyer, the mag has the scoop on how various members of his family reacted -- and it's a bit surprising!

Bruce is "finally happy," and when he decided to tell his kids, it sounds like they had the same reaction that we did. "Bruce told them everything – where things stood, what his plans were for the future, and what everyone could expect," a source told the mag. "Everyone basically knew what was up, but it was still a shock to hear it outlined so explicitly.”

On Kim Kardashian‘s reaction:
    "They all came all around pretty quickly, but each of them had to process it in their own way. Kim went to Kris and asked her how she felt. They had a very long conversation about it. Once Kim was satisfied that Kris was emotionally okay, she was able to give Bruce her unconditional support."

On Kanye West's reaction:
    "He is totally fine with it. He believes in live and let live, and he took it all in stride. He and Kim are just trying to show Bruce love and acceptance – complete acceptance."

Still no word on what Kris Jenner really thinks about it, but the mag reports that Kourtney's baby daddy Scott Disick "didn’t react very well" at first, but "is now on board."

Kendall Jenner looked rather glum when she visited her doctor earlier in the day, and when she hooked up with Kylie later on for dinner, neither of the ladies were in the mood to smile. We understand that this may be a lot to process, but seeing as Bruce is sharing his transition with Diane Sawyer (AND on Keeping Up With The Kardashians and his own reality show) it seems like he really wants to one-up Kris Jenner and the rest of the girls the attention, so they better get used to it!