Lani Hammett (born April 1, 1972) is an American celebrity spouse and creative collaborator best known as the former wife of Kirk Hammett, lead guitarist of the heavy metal band Metallica.
Born in Hawaii, she co-wrote two songs on Kirk’s debut solo EP Portals in 2022.
Who is Lani Hammett?
Lani Hammett, born Lani Gruttadauro, is an American woman who came to public attention through her marriage to Kirk Hammett in 1998.
Kirk has been the lead guitarist of Metallica since 1983 and ranks among the most celebrated rock guitarists in history.
She is more than a celebrity spouse. Lani co-wrote two instrumental tracks alongside her then-husband on his solo debut, Portals, released in April 2022.
Beyond music, she worked on leather craft projects in Northern California. Those projects helped inspire Kirk to launch his own line of leather guitar straps.
She has two sons with Kirk and prefers a quiet life away from public attention. Since her divorce, she has remained largely out of the spotlight.
Early Life of Lani Hammett
Lani Gruttadauro was born on April 1, 1972, in Hawaii. She spent her childhood in Hawaii with her family. Her parents have not been publicly identified.
She has a sister named Carmella Gruttadauro. Records also indicate a connection to Andrew Gruttadauro and Salvatore Gruttadauro, though the exact nature of those relationships has not been publicly confirmed.
Lani grew up far from the entertainment industry. Nothing about her upbringing suggested she would one day be linked to one of rock music’s most prominent figures.
Lani Hammett Age
Lani Hammett is 54 years old as of June 25, 2026, born on April 1, 1972.
Her zodiac sign is Aries. Her most recent public milestone came when her songwriting credits appeared on Kirk’s Portals EP in 2022.
Lani Hammett Ethnicity and Nationality
Lani Hammett is American by nationality. Her ethnic background has not been publicly confirmed.
She was born and raised in Hawaii. Her maiden surname, Gruttadauro, is of Italian origin.
Lani Hammett Height and Weight
Lani Hammett stands 5 feet 5 inches (1.65 m) tall. Her weight is reported at approximately 110 lbs (50 kg), though this figure has not been officially confirmed.
She has dark brown hair and brown eyes and is described by those who have seen her at public events as having a calm, understated presence.
Lani Hammett Career
Before marrying Kirk, Lani led a relatively private working life in California. She reportedly worked as a bartender during the period when she and Kirk first met.
She also developed a passion for leather craft while living in Northern California. Working on leather projects with her long-time friend Era Balestrieri, Lani helped create handmade items that caught Kirk’s attention.
Their friend made a guitar strap for Kirk, and he loved it immediately. That moment led directly to Kirk launching his own line of custom leather guitar straps.
Creative Collaboration and Portals
Lani’s most publicly documented contribution to music came through Kirk’s debut solo EP, Portals, released on April 23, 2022, via Blackened Recordings.
She co-wrote the first two tracks on the EP: “Maiden and the Monster” and “The Jinn.” Both songs are fully instrumental and were originally created as background music for Kirk’s horror memorabilia exhibition at the Peabody Essex Museum in Salem, Massachusetts, in 2017.
Kirk confirmed in 2019, during Metallica’s S&M2 events at the San Francisco Symphony, that he had been collaborating on music with Lani. That revelation came three years before the EP was released.
The Portals EP featured four total tracks. Lani co-wrote the first two, while conductor Edwin Outwater co-wrote the latter two. Kirk described the songs as “Audio Cinematic” compositions inspired by classic horror films.
Leather Guitar Strap Project
Her creative work in leather directly influenced Kirk’s professional life. The strap that Era Balestrieri made for Kirk inspired Kirk and Era to create a wider collection together.
Lani’s hands-on work with leather laid the groundwork for this collaboration. Her interest in craft extended beyond the home and into the world of music merchandise.
Later Years
After her marriage to Kirk ended, Lani stepped back entirely from public life. She does not maintain any verified social media accounts.
She continues to reside in California and Hawaii, according to reports from before 2020. Her focus, by all accounts, remains on her family and raising her two sons.
Lani Hammett Marriage
Lani Gruttadauro married Kirk Hammett on January 31, 1998, in an informal ceremony in Hawaii. Their first meeting reportedly took place when Lani, working at the time, brought Kirk to watch an autopsy at a morgue.
Kirk later described that experience as the moment he knew she was the right person for him.
Their marriage lasted over two decades. Kirk filed for divorce in San Francisco County on September 20, 2012, and court records indicate the case concluded around 2020.
Kirk was previously married to Rebecca Enrica Kestelyn, a marriage that ended in 1990 or 1991. His marriage to Lani was his second.
Lani Hammett Children
Lani and Kirk have two sons together. Their first son, Angel Ray Keala Hammett, was born on October 6, 2006. Their second son, Vincenzo Kainalu Hammett, was born on June 28, 2008.
Both boys have been raised largely out of the public eye. Neither Lani nor Kirk has publicly shared photographs of their children on social media.
Lani Hammett Net Worth
Lani Hammett’s personal net worth is not publicly confirmed. She has not held a publicly known professional role in recent years.
Her former husband Kirk Hammett has an estimated net worth of $200 million, according to Celebrity Net Worth, built through four decades with Metallica and the band’s record sales, touring revenue, and merchandise.
Lani’s own financial standing remains private. No verified figure from a major financial publication has been reported.
Lani Hammett Social Media
Lani Hammett does not maintain any verified public social media accounts.
She has chosen to stay off platforms such as Instagram, X (formerly Twitter), and TikTok. This stands in contrast to many other celebrity spouses who maintain active online presences.
Kirk Hammett is active on Instagram at @kirkhammett, though he rarely posts photographs of Lani or their sons.
Frequently Asked Questions
What is Lani Hammett’s net worth?
Lani Hammett’s personal net worth is not publicly confirmed. Her ex-husband Kirk Hammett has an estimated net worth of $200 million.
How old is Lani Hammett?
Lani Hammett is 54 years old as of June 25, 2026, born on April 1, 1972, in Hawaii.
Who is Lani Hammett married to?
Lani Hammett was previously married to Kirk Hammett, lead guitarist of Metallica, from January 31, 1998, until their divorce concluded around 2020.
What is Lani Hammett’s biggest creative contribution?
Lani co-wrote “Maiden and the Monster” and “The Jinn,” the first two tracks on Kirk Hammett’s debut solo EP Portals, released on April 23, 2022.
Where was Lani Hammett born?
Lani Hammett was born in Hawaii, United States.
What is Lani Hammett famous for?
Lani Hammett is known primarily as the former wife of Metallica guitarist Kirk Hammett, and for co-writing two songs on his 2022 solo EP Portals.
The Bottom Line
Lani Hammett co-wrote “Maiden and the Monster” and “The Jinn” on Kirk Hammett’s debut solo EP Portals, released via Blackened Recordings on April 23, 2022.
Her collaboration on those songs began as early as 2017, when she helped create background music for Kirk’s horror memorabilia exhibition at the Peabody Essex Museum.
Lani continues to live a private life with her two sons, Angel Ray Keala and Vincenzo Kainalu, away from the public eye. She remains one of the more private figures connected to the world of heavy metal.
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