GALLERY: Best Beards in Rock

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American singer-songwriter Bruce Springsteen, UK, 18th November 1975. (Photo by John Minihan/Evening Standard/Hulton Archive/Getty Images)

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NEW YORK, NEW YORK - FEBRUARY 07: Chris Robinson performs on stage during 32nd Annual Tibet House US Benefit Concert & Gala at Carnegie Hall on February 07, 2019 in New York City. (Photo by Ilya S. Savenok/Getty Images for Tibet House)

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ANAHEIM, CALIFORNIA - JANUARY 25: Scott Ian of Anthrax signs autographs during the 2019 NAMM Show at the Anaheim Convention Center on January 25, 2019 in Anaheim, California. (Photo by Jesse Grant/Getty Images for NAMM)

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British musician and singer Mick Jagger of rock band Rolling Stones leaving court after finalizing his divorce from Bianca Jagger, London, UK, 10th July 1979. (Photo by Stuart Nicol/Evening Standard/Hulton Archive/Getty Images)

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English musician, singer, songwriter, and multi-instrumentalist Pete Townshend of rock band The Who, UK, 27th November 1972. (Photo by Jack Kay/Daily Express/Hulton Archive/Getty Images)

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NEW YORK, NY - SEPTEMBER 10: Michael Stipe attends arrivals for Opening Ceremony presentation during New York Fashion Week at La Mamma on September 10, 2017 in New York City. (Photo by Slaven Vlasic/Getty Images)

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LAS VEGAS, NV - AUGUST 04: Bassist/singer Tom Araya of Slayer performs at The Joint inside the Hard Rock Hotel & Casino on August 4, 2017 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)

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NEW YORK, NY - JULY 27: Kerry King of Slayer performs Slayer With Lamb Of God And Behemoth In Concert - New York, New York at The Theater at Madison Square Garden on July 27, 2017 in New York City. (Photo by Theo Wargo/Getty Images)

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GLASTONBURY, ENGLAND - JUNE 24: (L-R) Dusty Hill and Billy Gibbons of ZZ Top perform on the Pyramid Stage during the Glastonbury Festival at Worthy Farm, Pilton on June 24, 2016 in Glastonbury, England. Now its 46th year the festival is one largest music festivals in the world and this year features headline acts Muse, Adele and Coldplay. The Festival, which Michael Eavis started in 1970 when several hundred hippies paid just £1, now attracts more than 175,000 people. (Photo by Ian Gavan/Getty Images)

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INDIO, CA - APRIL 16: Musician Dan Auerbach of the Arcs performs onstage during day 2 of the 2016 Coachella Valley Music & Arts Festival Weekend 1 at the Empire Polo Club on April 16, 2016 in Indio, California. (Photo by Mike Windle/Getty Images for Coachella)

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BEVERLY HILLS, CA - FEBRUARY 28: Record producer Rick Rubin attends the 2016 Vanity Fair Oscar Party Hosted By Graydon Carter at the Wallis Annenberg Center for the Performing Arts on February 28, 2016 in Beverly Hills, California. (Photo by Pascal Le Segretain/Getty Images)

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BEVERLY HILLS, CA - JANUARY 25: Recording artists Taylor Hawkins (L) and Dave Grohl of Foo Fighters attend the 56th annual GRAMMY Awards Pre-GRAMMY Gala and Salute to Industry Icons honoring Lucian Grainge at The Beverly Hilton on January 25, 2014 in Beverly Hills, California. (Photo by Larry Busacca/Getty Images for NARAS)

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circa 1970: Ex-Beatles member George Harrison (1943 - 2001) at a press conference to publicise a festival of Indian music and arts at the Royal Festival Hall, London. The event, 'Concert for Bangladesh' is in aid of famine victims in the subcontinent. (Photo by Ian Showell/Keystone/Getty Images)

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13th September 1971: Ex-Beatles member Ringo Starr at a steel furniture exhibition at Liberty's store in Regent Street, London. (Photo by Michael Ledger/Fox Photos/Getty Images)

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13th January 1973: British blues-rock singer and guitarist, Eric Clapton, in concert at the Rainbow Rooms. (Photo by Express/Express/Getty Images)

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16th September 1970: British rock band Led Zeppelin collect their geode awards after being voted top British group in the Melody Maker Pop Poll in London. From left to right, they are Jimmy Page, Robert Plant (who also won the Best British Singer award), and John Bonham. (Photo by Roger Jackson/Central Press/Getty Images)