Khloe Kardashian wardrobe malfunction at X Factor

Khloe Kardashian has been tweeting her excitement surrounding her very first time hosting duties on the X Factor on Wednesday night.

And she started off the live shows with a bang exposing her nipple in a sheer purple blouse as she took to the stage for the live family-friendly broadcast show.

Khloe Kardashian, 28, had opted for a plunging black long-sleeve sheer top with sequined detailing, which she opted to wear with no bra underneath.

She paired the ensemble with a tight-fitting black pencil skirt cinched in at the waist with a leather belt.

Standing alongside co-host Mario Lopez, Khloe Kardashian was smiling as she underwent her hosting duties, seemingly unaware of the wardrobe malfunction.

Afterwards she joked about the incident on her Twitter account, saying: “I think I had a little nip action earlier. LOL.”

But Judge Simon Cowell certainly took note, immediately taking to his own account to make a crude joke about the incident.

“I think the air conditioning is on high tonight looking at khloe,” Simon Cowell wrote on the social networking site.

The exposure also caused an social-networking sensation, with several users tweeting up a storm about the incident.

“Just turned on the X Factor… why is Khloe Kardashian’s nipple staring at me. I don’t like it,” one user wrote.

“Who can concentrate on the singing when Khloe’s nipple keeps distracting me?!” another one Tweeted.

But Khloe Kardashian’s hosting skills did not receive as much positive publicity as her nipple.

The Washington Post wrote: “Odom came across like the novice she is, shouting her lines despite the mic clutched in her hand and making awkward small talk with contestants and judge and executive producer Simon Cowell.”

And it added: “Odom sounded like an oddly flirtatious schoolgirl as she introduced Cowell as <<Mr. Sexy>>.”

It is unknown whether Khloe Kardashian was aware that her blouse was so sheer that her modesty would be exposed.

But Simon Cowell will no doubt be delighted at all the extra publicity his struggling show is getting off the back of the incident.

And it is not the first time she has bared her nipple on live television either.

For in June last year Khloe Kardashian highlighted the perils of fashion on the Live with Regis & Kelly show when she accidentally exposed her breast for six minutes, live on the daytime TV program.

Busily promoting the news series of her show Keeping Up With The Kardashians she was unaware that her left nipple was on full view, beneath a transparent panel on her blouse.

Unfortunately for Khloe Kardashian, her hosts on the show Fox And Friends were so interested in her and sister Kourtney that non noticed her mistake.

Her fans were quick to tell her, however.

One tweeted: “Your nipple was showing on Fox and Friends. See through tops.”

Khloé Kardashian laughed off the incident, replying: “Thank God! I f****** love nipples!!!!”

Meanwhile Khloe Kardashian is braving it alone on Wednesday night as she makes her hosting debut live on national television – Lamar Odom can’t make it.