Anastasia Love Sagorsky,^[1] also known as Staci Keanan, is an American lawyer, law professor and former actress. Keanan is best known for portraying the role of Nicole Bradford on the NBC sitcom My Two Dads, from 1987 to 1990, and as Dana Foster on the ABC/CBS sitcom Step by Step, from 1991 to 1998.

Keanan was born in Devon, Pennsylvania, the daughter of Jacqueline (née Love) and Irv Sagorsky, a car salesman.^[2][3] She has a sister, Pilar.^[3]

In 2002, Keanan graduated cum laude with a Bachelor of Arts degree in Art History and a minor in French from UCLA. Her academic honors include membership in the Golden Key International Honour Society and Phi Beta Kappa honor societies.^[4]

At age five, she began modeling and appeared in print, radio, and television advertisements, including television commercials for My Little Pony, Burger King and Hershey's Kisses. As a youth, Keanan moved with her mother and sister to New York City, where she changed her name to "Staci Love" and began appearing in summer stock. She made her credited television debut in the 1987 miniseries I'll Take Manhattan.^[5]

At the age of 12, shortly after she moved with her family to Los Angeles, she was cast as Nicole Bradford in the TV series My Two Dads. The series ran from 1987 to 1990. During the 1990-91 season, she co-starred in the short-lived series Going Places with Alan Ruck, Heather Locklear, and Hallie Todd. The following year, Keanan was cast as Dana Foster in the TV series Step by Step which aired from 1991 to 1998. By 1997, Keanan had changed her name from Staci to Stacy.^[6]

Keanan had roles in the short Stolen Poem (2004) and the films Hidden Secrets (2006), and Death and Cremation (2010) with Brad Dourif, Jeremy Sumpter, and Daniel Baldwin. In 2009, Keanan appeared in Holyman Undercover, and in 2010, she appeared in a cameo in You Again with Step by Step castmates Christine Lakin and Patrick Duffy. She also co-starred in the 2009 film Sarah's Choice.

Keanan attended Southwestern Law School and was admitted to the State Bar of California in 2013.^[4] She currently practices law under her birth name, Anastasia Sagorsky, in the Los Angeles area.^[1] In 2014, Keanan worked as a Deputy District Attorney in the Riverside County District Attorney's office prosecuting felony cases involving violent crime or death.^[7] Keanan joined the Los Angeles County District Attorney's office as a Deputy District Attorney in 2016.^[4][8] In January 2021, she became an adjunct associate professor of law at Southwestern Law School.^[4] In 2022, she taught a course on how to properly prosecute and defend driving under the influence cases.^[9]

On February 11, 2017, Keanan married actor and producer Guy Birtwhistle.^[10]