Who is Kevin James and Gary Valentine’s younger sister, Leslie Knifling?

Leslie Knipfing is an American-born beautiful woman who grabbed people’s attention for being the sister of celebrities like Kevin James and Gary Valentine. Kevin James is a well-known American actor, comedian, and screenwriter, best known for starring in “The King of Queens,” “Kevin Can Wait,” and more.

Likewise, Gary Valentine is also a renowned American actor, comedian, and writer, well-known for starting in “The King of Queens,” “Happy Madison Productions,” and more.

Quick Info
Full NameLeslie Knipfing
DOB17 November 1974
BirthplaceBismarck, North Dakota
Age47 years
Zodiac signScorpio
Height5 feet 9 inches
Hair ColorBlonde
Eyes ColorPale
Father Joseph Valentine Knipfing Jr
MotherJanet Knipfing
BrothersKevin James and Gary Valentine
Relationships StatusSingle
Net Worth$1.5 million


Leslie Knipfing was born on 17 November 1974 in Bismarck, North Dakota as a daughter of a father, Joseph Valentine Knipfing Jr, and mother, Janet Knipfing. She has two brothers, Kevin James, and Gary Valentine.

Leslie Knipfing holds American nationality, and as per her ethnic background, she belongs to the ethnicity of Caucasian. Further, she follows the Christianity religion.

Leslie Knipfing's Brothers in 2006
Leslie Knipfing’s Brothers in 2006 Source: Getty Images

Early Life & Education

Leslie Knipfing grew up beautifully in a good environment with her family members and playing with her brothers. Talking about her parents, her father, Joseph, was an insurance agency owner, whereas her mother, Janet, is a Chiropractors’ office worker.

Unfortunately, her father Joseph took his last breath on 30 January 2006 because of Heart disease as he had been battling heart disease for so long. At that time, Leslie’s father was just 75 years old, which was a tragic moment for her family.

Likewise, her brothers have established themselves as famous personality. Kevin James, whose real name is Kevin George Knipfing, has established himself as a famous American actor, comedian, and screenwriter.

Leslie Knipfing
Leslie Knipfing’s brother and his wife, Source: superstars

Similarly, her other brother, Gary Valentine, whose real name is Gary Joseph Knipfing, has also established herself as a famous American actor, comedian, and writer. Gary is the oldest of three children, Kevin is the middle, and Leslie is the youngest.

She grew up playing with her brothers, who are very supportive and caring. They have created many memories together and had the best childhood together. Further, since her childhood, she has been suffering from the rare genetic disorder, Retinitis Pigmentosa, which can cause loss of vision and tunnel vision. But, complete blindness is not common.

Check out, Dave Bugliari.

Besides this, Leslie Knipfing has not mentioned her academic qualification and the schools and colleges she attended for her study. So, it becomes hard to determine Leslie’s academic qualifications.


Social Media

Leslie Knipfing is not active on any social media accounts as she seems private about her personal life. But her brother is active on several social media platforms.


Personal Life

Leslie Knipfing is a private person who likes to keep her personal life far from the media. But, talking about Leslie’s love life, she has not married yet, and there are also no rumors about her being in a relationship. So, she is single for now and focusing more on her career.

Besides this, her brothers are happily married. Her brother Gary exchanged his vows with his beautiful wife, Jackyline Knipfing. Likewise, her other brother Kevin married his gorgeous wife, Steffiana de la Cruz.


Check out the latest updates on Steffiana de la Cruz


Leslie Knipfing works in the insurance agency that her father established. Likewise, she also works as a charity event manager, which is for her brother Kevin James. Moreover, she sees working for fun raising to help people suffering from eye disease, HIV, and cancer.

Leslie Knipfing
Leslie Knipfing’s two brothers and their friends, Source: blog.SiriusXM

Besides this, Leslie came into the limelight for being the sister of celebrities like Kevin James and Gary Valentine. Moreover, people misunderstood her with actress Leslie Bibb and regarded her as a Bibb. Leslie Bibb is a famous American actress and model.


Net Worth

A beautiful, active and talented Leslie Knipfing is famous as the sister of celebrities like Kevin James and Gary. Leslie enjoys her standard life with an estimated net worth of $1.5 million.


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