Jenni Rivera. July 2011 file photo.
Jenni Rivera. July 2011 file photo. (Steve McCrank / Staff Photographer)

NEW YORK - Some final words from the late Mexican-American singer and TV star Jenni Rivera will be out this summer.

Atria Books announced Monday it's publishing a memoir by the multimillion-selling artist, who died in a plane crash in December at age 43.

"Unbreakable" is scheduled to come out in July. It will come out simultaneously in Spanish. It has been authorized by Rivera's family.

Rivera had been working on "Unbreakable" for several years.

Atria says "Unbreakable" will reveal the "heart and soul" of Rivera, a mother of five and grandmother of two known for her frank talk about her life.

Known as "La Diva de la Banda," Rivera was born and raised in Long Beach and launched her career by selling cassette tapes at flea markets. She went on to sell more than 15 million copies of her 12 major-label albums.

She was one of the biggest stars of the Mexican regional style known as grupero music, which is influenced by the norteno, cumbia and ranchero styles.

More recently, the Encino resident gained attention with her reality TV show, "I Love Jenni."

Rivera died Dec. 9 when her rented Learjet LJ25 crashed in northern Mexico about 15 minutes after departing Monterrey, Mexico. She was 43. Six other people aboard also died.

Her death created a wave of anguish among millions of fans on both sides of the border.

In Southern California, memorials grew and fans gathered at Plaza Mexico in Lynwood, outside Rivera's mother's home in Lakewood and elsewhere in the week following the plane crash. Family members and fans held out hope for days that the singer might have survived, until her remains were positively identified.

During a public memorial Dec. 19 at Gibson Amphitheatre, nearly 6,000 fans packed the venue to pay homage to the singer, whose personal songs about her own life struggles often provided inspiration for others.

Since the crash, questions have been raised about the safety of the jet in which Rivera was traveling.

Last month, families of four members of Jenni Rivera's entourage who were killed in the crash filed a lawsuit against the jet's owners and Rivera's Encino-based company.

The lawsuit claims the pilots flying the LearJet were not licensed to operate the plane and the jet was poorly maintained.

The two-engine turbojet plunged almost vertically from more than 28,000 feet and hit the ground in a nose dive at a speed that may have exceeded 600 mph, Mexican transportation officials said in initial reports.

Mexican authorities and the U.S. National Transportation Safety Board are investigating the crash.