(Cover) - EN Showbiz - Rihanna would've entered a TV singing show if she hadn't been signed.

The 23-year-old will be the special guest on US X Factor this week.

She can't wait to appear, revealing she is a huge fan of the new series searching for a music superstar.

"Six years ago before I was signed, if it was The X Factor that had come first, I definitely would have entered to have a chance at fulfilling my dream," she is quoted as saying by RadarOnline.com. "With this show, it's all so exciting, and it's like a party!"

Rihanna appeared on the UK version of The X Factor last year.

Her performance drew huge viewing figures and there were complaints from viewers about her raunchy performers. The singer confessed that there is always huge pressure when performing on the shows.

"Because I respect the business and you have young people who want to be in your shoes and to be the professional - you don't want to get up there and be lacklustre," she explained. "You have to put you're A' game on this show."

Rihanna was signed to Def Jam Recordings when she was just 16.

She auditioned for L.A. Reid a judge on US X Factor - who signed her on the spot. The star sympathises with all the contestants who stand up in front of the judging panel, which also features Simon Cowell.

"I know what it's like to audition for L.A." she said. "He can definitely be a pain in the a*s as well. I have to say, he will find a way to make you feel you might have a second chance on a nice day, but he rarely gives second chances. You have to really impress him in a short time. Simon is very raw. Let's put it that way. With the way that he approaches critique. But it's very honest. You have to listen to everything he says, no matter how nasty it might sound." (C) Cover Media