Kim Kardashian's charity boxing match got ugly when she left the ring with a black eye and her brother Rob ended up in the hospital with a concussion, according to the reality star's blog.

Kim says her family took a helicopter to a charity event where they agreed to participate in boxing matches in order to raise support for The Dream Foundation. "We literally had three days of training to prepare for the event," she explains on her blog. "We didn't expect what happened..."

The reality star beauty says that her brother went against an opponent "at least 25 pounds heavier than him" and when his mask fell off, he got hit hard. "When he put his hands down, he got hit in the face and ended up in [the] hospital with a concussion. Rob's a strong guy and can definitely hold his own, but he wasn't expecting to get hit after his mask had fallen off! This guy just got really down and dirty!"

Kim says her opponent was tough as well. "I knew I had to do it for charity, since that's what it was all about, but man, my girl could throw a punch!" Kim writes. "Look at my black eye!!!"

Regardless of the bumps and bruises from the event, Kim says a concussion and a black eye can't hold her family down! She blogs, "Rob is doing fine now and my black eye will be gone soon ... I hope. You can try to bring the Kardashians down ... but we're a strong family."