Janet Jackson may not be anywhere near the courtroom once a jury reaches a verdict in Conrad Murray's manslaughter trial ... because she's currently tied up on the Australian leg of her world tour.

After playing Melbourne earlier this week, Michael Jackson's baby sister arrived in Sydney on Friday.

Guilty or not, the tour must go on.

The Jackson family is NOT inside the courtroom this morning ... as they have been for most of the Conrad Murray manslaughter trial ... but sources tell TMZ -- they WILL be when the verdict is read.

Sources close to the family tell TMZ ... the family is expected to get a 2-hour heads up when the jury is ready to present their verdict to the judge ... at which point, Katherine, Jermaine, La Toya and the rest of the crew will head on down to the courthouse.

The jury has already begun deliberating -- and they could return a verdict at any moment.

Stay tuned.

It begins ... Dr. Conrad Murray just rolled up to the L.A. criminal courthouse with his massive entourage, looking sedate in a gray pinstripe suit.

Katherine, Joe, and Jermaine Jackson arrived moments later. All that's missing is a red carpet.


Opening statements kick off around 8:30 AM.


9:30 AM: Janet Jackson also arrived to court, alongside her brother Randy. LaToya arrived soon after, holding a flower.

TMZ has obtained a copy of the jury questionnaire in Dr. Conrad Murray's manslaughter trial, and the lawyers and judge want to know just how obsessed potential jurors are over high-profile cases like Casey Anthony.

Among the 113 questions ...

-- Over the past several years, have you followed any publicized cases?   (e.g., OJ Simpson, Robert Blake, Phil Spector, Casey Anthony, etc).

-- Have you accessed or posted any blogs concerning Michael Jackson or Conrad Murray?

-- Agree or disagree .... Celebrities and high-profile people feel they are entitled to act however they please.

-- Agree or disagree .... Celebrities and high-profile people in Los Angeles get away with crimes because of their status.

-- Has your life or the life of anyone close to you ever been affected by the behavior of someone who had a drug (prescription or other) or alcohol addiction?

-- Did you ever watch "This Is It?"

-- Have you ever considered yourself a fan of Michael Jackson or the Jackson family?

-- Have you ever undergone a medical procedure that required an anesthetic?

-- Have you ever been prescribed medication by a friend who is a physician?

-- Has your physician ever refused to prescribe a medication that you specifically requested?

And the questionnaire lists potential witnesses to see if prospective jurors know any of them.  The witnesses include Janet Jackson, Jermaine, Joe, La Toya, Katherine, Paris, Prince, Blanket, Randy, Marlon, Tito and Rebbie.

Here's Nicki Minaj performing on "GMA" on Friday (left) -- and Janet Jackson at some little event back in 2004 (right).

Question is ...

Here's pop diva Janet Jackson at an amfAR event in Cannes on Thursday -- and music legend Prince at an awards show last year.



Unbeweaveable.

We're just sayin'.

Kind of ironic ... Dr. Conrad Murray shows up on the streets of New York City on the same weekend Janet Jackson is playing Radio City Music Hall.


Our photog spotted him out Saturday afternoon and helped him make sense of a parking meter -- 'cause, you know ... checking on things after being gone for a while -- never a good idea, Doc.

Take a magical trip back in time and check out some of the past Super Bowl half time performances.

The Jackson clan turned day 2 of the Conrad Murray/Michael Jackson manslaughter prelim into a couture runway show.


From Janet in Jermaine drag to Katherine's purple Barney suit, check out all of the killer fashions.

Sources tell TMZ Janet Jackson was so "blown away" by the positive reaction to her appearance on the "American Idol" finale that she's "seriously entertaining" a concert tour ... that could begin before the end of the year.


Janet was amazing on Wednesday's "Idol" -- performing "Again," "Nothing," and "Nasty."  We're told as of today a concert tour is now on the front burner.

Miss Jackson -- who has only toured once since 2002 (and a bulk of that tour was canceled) is also set to appear at the Essence Music Festival in New Orleans on July 2.

Here's Janet Jackson rockin' her natural hair on the "American Idol" finale last night (left) -- and Toni Braxton at some point in the early '90s (right).


Neither had a wardrobe malfunction last night.

We're just sayin'.