Dang it Madi You could have bid on a chance to Beat Kim in her face....

Kim Kardashian's a knockout. Literally.

The reality TV star put her good looks on the line on Tuesday in a charity boxing match – and one female fan laid a blow right on Kim Kardashian's kisser, according to the U.K.'s Daily Mail.

The buxom beauty stepped into the ring dressed in head-to-toe pink Everlast gear, but she was soon bested by her opponent, who was the highest bidder in an auction benefiting The Dream Foundation at the Commerce Casino in Commerce, California.

"The event itself was absolutely insane!!" Kardashian wrote on her blog. "We literally had three days of training to prepare for the event and thought it would be a little bit of fun to raise money for one of our favorite charities. We didn't expect what happened."

Despite gamely facing her fears in the end, the 29-year-old socialite almost canceled her match after her younger brother, Rob, was KO'ed in an earlier fight.

"When Rob stepped in the ring to fight, his opponent was at least 25 lbs heavier than him, even though the organization had assured us that they were screening the people we were fighting against," Kardashian wrote. "At one point Rob's mask fell off and when he put his hands down he got hit in the face and ended up in hospital with a concussion. This guy just got really down and dirty!"


When her 22-year-old bro was floored in a barrage of jabs in the first round, Kim reportedly jumped into his corner and demanded the bout be stopped, claiming the larger opponent was going too hard on him.

That left Kim as the only "Keeping Up With the Kardashians" member to rumble in the ring, although family members including stepfather Bruce Jenner, mother Kris, sisters Khloe and Kourtney, and Kourtney's boyfriend Scott Disick, cheered her on in the audience.

"We were all really angry and upset about what had happened to Rob, but I hadn't even fought yet and I didn't want to let the charity down, so I decided to get in the ring," Kardashian wrote. "My girl was a good sport, but she was tough!"

She added, "At the end of the day, we did this for charity and that's what counts. "You can try to bring the Kardashians down... but we're a strong family. A concussion and a black eye can't hold us down!"