THE MONEY: Guerin joined ranks of L.A.’s super-wealthy last year when homebuilding arm of family’s real estate business, Shapell Industries Inc., sold to Toll Brothers Inc. for $1.6 billion.

BUZZ: Inherited 43 percent of family business after father, Nathan Shapell, died in 2007. Shapell, born in Poland, survived two Nazi concentration camps with brother David and brother-in-law Max Webb. Three co-founded Beverly Hills development company in 1955, built about 70,000 homes and 7,000 apartments along California coast. Guerin sits on board of what remains of company. Puts more time into philanthropy for Cedars-Sinai Medical Center, where she serves as vice chair of board of directors and president of board of governors. She and husband, Paul, donated $20 million to hospital last year to establish congenital heart disease program, and endow academic chairs in pulmonary medicine and pediatric neurosurgery. Guerin Family Pavilion at Skirball Cultural Center opened in fall.

NET WORTH: $1.1 billion

LAST YEAR: Not on list

AGE: 67

RESIDENCE: Beverly Hills

SOURCE OF WEALTH: Inheritance, real estate