Paris Jackson ''impressed lawyers'' when giving evidence in the wrongful death lawsuit relating to her father Michael Jackson.

The 14-year-old daughter of the late King of Pop is involved in the reported $40 billion lawsuit his mother, Katherine, has brought against concert promoters AEG Live - which claims they mishandled the star before his death in 2009 - and lawyers are pleased with her pre-trial testimony.

A source told ''Paris impressed all of the lawyers involved with her professionalism and demeanour during her deposition last week.

''Her older brother, Prince, had a rough time during his depo a week earlier, so allowances were made to make sure it didn't happen again. That's why Katherine's lawyers demanded that Paris' deposition take place at the courthouse so the judge could intervene if it appeared to be getting too tough for her.

''Luckily it didn't come to that. Paris will have to sit for another day of questioning but she is OK with that - she is an extremely intelligent, compassionate and thoughtful young lady.''

Michael's family have brought legal action against AEG Live - who sponsored his ill-fated 'This Is It' tour - for the alleged negligent hiring and supervision of Dr. Conrad Murray, who has been convicted of involuntary manslaughter for his role in Michael's death from acute Propofol intoxication in June 2009.

However, Dr. Murray had not formally signed an employment contract with AEG at the time of Michael's death, and they maintain that they aren't responsible for his tragic death.

Michael's eldest son, Prince, is planning to testify at the upcoming trial, which is expected to last three to four months, with Jury selection expected to begin on April 2.