‘Live On Letterman’ Online Concert For ‘California Gurls’ Pop Star Set For Tuesday, Aug. 24 at 8PM.

‘Live On Letterman’ Online Concert Series. CLICK HERE for more info!

By Danielle Evenson, CBS Radio

NEW YORK (CBS) ―  Being famous isn’t as easy as it looks. Just ask pop sensation Katy Perry. Not only does she have to deal with boyfriend Russell Brand hogging all her hair products, but she also has to battle ridiculous internet rumors about her life.

What’s real? What’s rumor? What’s just plain horse hockey? Read on to find out which of the most outrageous rumors are confirmed, plausible or busted. Come back on Aug. 24 (8 p.m. ET/5 p.m. PT) to watch Katy play an epic streaming concert from the Ed Sullivan Theater as the latest installment of the “Live On Letterman<http://www.cbs.com/late_night/liveonletterman/>” web series.

Rumor: Katy Perry is in a blood war against pop star Miley Cyrus. DENIED

Tabloid Life and Style reported that Katy got catty backstage at Canada’s MuchMusic Awards. According to the report, Katy compared Miley Cyrus to the train wreck known as Britney Spears and negated the talent of both girls. According to a post on Twitter, Katy loves Miley and thinks there is plenty of room for “California Gurls” to “Party in the USA.”

Rumor: Rihanna is planning Katy Perry’s bachelorette party. CONFIRMED

This was originally a rumor on Twitter, until Rihanna confirmed it herself in a recent Access Hollywood interview.

Rumor: Katy Perry and Russell Brand will be married wearing latex. PLAUSIBLE

Anything can happen with these two. She doesn’t bat an eyelash at the thought of donning  a cupcake bra, while Brand was just spotted wearing ridiculous outfits (including a top hat and Underoos) for his newest role as a batty, bachelor millionaire in Arthur. The British tabloid The Sun first reported the rumor in June, but the couple have neither confirmed or denied the bold report.

Rumor: Katy Perry is pregnant. DENIED

When Katy and Russell announced their engagement a mere four months after they started dating, the internet was a buzz with baby rumors. Could this couple be another Reese Witherspoon/Ryan Phillipe waiting to happen? Nope, Katy won’t be taking maternity leave any time soon. She confirms that she is without child in this oddly graphic and specific Tweet on Jan. 13, 2010<http://twitter.com/katyperry/status/7725284016>.

Rumor: Katy Perry will pose topless. CONFIRMED… and DENIED

Katy recently graced the cover of Rolling Stone and Esquire UK wearing only her hands for a shirt, but in an official YouTube interview<http://www.youtube.com/watch?v=UOtJUmiUZ08>, she was asked if she would ever pose for Playboy. She replied, “I would probably say no because I think… that’s showing all your cards. And I always want to keep a couple aces up my sleeve. And plus I think it’s a fine line to tease and then to just give it away, and I like to be considered more of the tease.”

Rumor: The Beach Boys are suing Katy Perry. DENIED (mostly)

After Katy’s song “California Gurls” became a hit in July 2010, the internet was a buzz with rumors that classic rockers the Beach Boys were set to sue the Daisy Dukes off of Katy. In the middle of the song, Snoop Dog utters the line “I wish they could all be California Girls.” This line is reminiscent of the Beach Boys’ classic “California Girls.” Perry shot the rumor down in a Tweet on Aug. 6, 2010, and a representative from Rondor Music (who owns Beach Boys’ music) announced that there is no formal lawsuit (but there is a “diminutive claim”).

Rumor: Katy Perry to play a live streaming concert at the Ed Sullivan Theater August 24, 2010. CONFIRMED

Come back to this site to watch Katy perform in an hour long, free, streaming concert for her favorite fans straight from the “Letterman” stage on August 24, 2010. If you miss it, don’t worry — the show will be available to rewatch online<http://www.cbs.com/late_night/liveonletterman/>.