Monster Girl is one lucky bitch.
The first woman to hold a seat on the New York Stock Exchange left her beloved long-haired Chihuahua a whopping $100,000 in her will.
Muriel Siebert, who died of cancer in August at age 80, asked friend Lynda Fox-Frazer, of East 80th Street, to look after her dear Monster Girl, who comes with a six-figure savings account.
“I request that my dog not be left alone for long periods of time during the day,” the Wall Street icon writes in her will, filed in Manhattan Surrogate’s Court.
The pioneering financial whiz had bonded with her Chihuahua — and a predecessor pet with the same name — because neither was “intimidated by the big dogs.”
Siebert never married, was childless and a college dropout — but managed to amass a $48 million fortune, according to filings in Manhattan Surrogate’s Court.
The majority of the money will go to the Muriel F. Siebert Foundation, which “supports the furtherance of education in personal financial literacy and the humane treatment of animals,” specifically animals “owned by the elderly who are financially challenged,” states the will, which was filed Friday.
The East 52nd Street resident also gave $10,000 to The Animal Medical Center in Manhattan, to be gifted while Monster Girl is still living.
Siebert’s housekeeper, Janet Bradley, of Queens, said Monster Girl was “her heart.” Bradley got a $25,000 bequest from her employer.
Siebert left her only sibling, sister Elaine Siebert, who lives in a Bronx nursing home, a $1.5 million trust.
She gave her longtime hairdresser and confidant, George Jones of the West Village, a comfortable sum of $360,000. Jones did not know about the gift when contacted by The Post, but declined to comment.
The trailblazer, who first muscled her way into the boys club of Wall Street in 1967, buying a seat for $445,000, was also very generous to her close friends.
“She was a very interesting woman, she wanted to make it,” the Upper East Side friend said. “When I first ran into her, everyone else was working and playing and she was only working. She did it, but then she was a forceful personality and she knew what she wanted, which a lot of young women don’t.”
Additional reporting by Sabrina Ford