The Kardashian clan was celebrating Kourtney's birthday at Joe Francis' Puerto Vallarta home when Kim dozed off in the sun on April 16 and got burned.
"Poor little Kimmie laid out too long and got a major sunglasses tan! It was SO funny though!" Us magazine quoted her sister Khloe as blogging.
"We called her Zorro the rest of the trip hahahaha," she added.
Kim has decided to stay away from the limelight for a few days, to save herself from being the target of ridicule.
"I'm going to have to hide from cameras for days," she wrote on her blog.
"It hurts! Everyone here is making fun of me!" she added. (ANI)