Frank Sinatra (L) and his wife Barbara salute the crowd in front of the Atlantic City Medical Center Sunday afternoon after the dedication of a wing of the hospital in his honor. File Photo by John Full/UPI | License Photo

Frank Sinatra (R) and his wife, Barbara, arrive at the White House in Washington on February 6, 1981 to attend President Ronald Reagan's 70th birthday party. File Photo by Larry Rubenstein/UPI | License Photo

Barbara Sinatra (L-R), seen here with comedian Bob Hope and her husband Frank Sinatra during a tribute to Sinatra, "Frank Sinatra: An American Treasure-Thanks From His Friends and Neighbors." Barbara Sinatra died at her home in California on Tuesday morning at the age of 90. File Photo by Jim Ruymen/UPI | License Photo

July 25 (UPI) -- Barbara Sinatra died at her home in California at the age of 90 after months of declining health on Tuesday morning.

Sinatra, also known as "Lady Blue Eyes," was a former Las Vegas showgirl, the final wife of the late singer Frank Sinatra. She built a foundation to help abused children at Eisenhower Medical Center.


Jamie Kabler, a longtime family friend of Sinatra, told USA Today a funeral will be held on August 1.

"She died comfortably surrounded by family and friends at her home," Children's Center Director John Thoresen said.

She married Frank Sinatra in 1976 when he was 61 and she was 49 and the couple were married for 22 years until he passed away in 1998.

Sinatra used her husband's fundraising prowess to found the Barbara Sinatra Children's Center, which a spokesperson said has allowed thousands of children to benefit from therapy.

"Barbara started raising funds for it in 1985 with Frank's support," Thoresen said. "It opened in 1986 and since that time, over 20,000 children have received beneficial therapy here. There are several child advocacy centers like it around the country, [but] this one is probably most recognized."

Sinatra is survived by her son Oliver Marx and granddaughter Carina Blakeley Marx.