Kim Kardashian has blasted tabloids for claiming she has had implants placed into her butt to make it look larger.

The reality star said magazines such as InTouch have unfairly placed new photos of her side-by-side pictures of her before she was pregnant. She wrote on Twitter, "I'm seeing all these nonsense tabloids claiming I have butt implants-injections. Get a life! Using pics of me 15lbs skinnier (before I had my baby) comparing to me now! I still have weight to lose. Anyone who has had a baby knows how hard it is to lose weight(especially the last bit of weight) & your body totally changes!

"Making fun of me pregnant & making fun of me trying to lose weight now shame on you. I'm not perfect but I will never conform to your skinny standards sorry! Not me. And BTW I've lost a lot so far & I'm proud of that! Don't give young girls a complex!"

Kardashian also claimed OK! Magazine altered a photo of her, putting a photographer's snap (in detail above) next to the version that appeared on the cover. "BTW tabloid...please don't photoshop my clothes! If they photoshop my clothes who knows what else they tweak."

It was then back to business for Kim, who was happy to promote her upcoming Kardashian Kids clothing line at Babies "R" Us in her next Twitter post.