LOS ANGELES—A chef who worked for Michael Jackson has described to jurors the lives of the superstar's children, including what she says was Paris Jackson's last birthday party.

Kai Chase says the singer hired a private circus for his daughter's 11th birthday party in 2009 in the backyard of his rented mansion.

Chase says the performance was a Cirque du Soleil style performance with men on stilts and a woman performing in a giant balloon. The celebrity chef continues to work for the singer's children and his mother.

She says Paris Jackson, now 15 years old, has not had a birthday party since then.

Chase is testifying in Katherine Jackson's lawsuit against AEG Live LLC over her son's death.

AEG Live denies any wrongdoing.