American Idol judge Paula Abdul has slammed reports she has undergone cosmetic surgery, insisting she has only tried Botox.

The former pop star underwent the muscle-paralysing facial treatment in April, and hints her fellow Idol judge Simon Cowell also has a penchant for Botox.

“Check behind my ears! I haven’t had one ounce of work done,” she told American OK magazine. “I had (Botox) done for the first time six weeks ago in my forehead, and it only worked for about two weeks. Simon doesn’t have any wrinkles.”