Facebook founder Mark Zuckerberg explains he wears the same gray t-shirt every single day because it helps him make Facebook better.
In his first ever public question and answer posted to the company's Facebook page, when asked about his repetitive wardrobe, Zuckerberg responded making one less decision every morning helps him give more energy to his company.
"I feel like i'm not doing my job if i spend any of my energy on things that are silly or frivolous about my life so that way i can dedicate all of my energy towards building the best products and services."
Zuckerberg Same Outfit
Mark Zuckerberg and 7 other moguls who wear the same outfit every day
Designer Michael Kors waves as he acknowledges audience applause after his Spring 2015 collection was modeled during Fashion Week, in New York, Wednesday, Sept. 10, 2014. (AP Photo/Richard Drew)
Michael Kors walk the runway to applause after showing his Spring 2014 collection on Wednesday, Sept. 11, 2013 in New York. (AP Photo/Bebeto Matthews)
Actress Hilary Swank, from left, designer Michael Kors and Anna Wintour arrive at the 2013 Couture Council Award Luncheon at Lincoln Center on Wednesday, Sept. 4, 2013 in New York. (Photo by Charles Sykes/Invision/AP)
Michael Kors poses before the Fall 2013 Project Runway fashion show on Friday, Feb. 8, 2013 in New York. (Photo by Charles Sykes/Invision/AP)
Designer Michael Kors is interviewed backstage before his spring 2012 collection is modeled during Fashion Week in New York, Wednesday, Sept. 14, 2011. (AP Photo/Richard Drew)
Mark Zuckerberg, chief executive officer of Facebook Inc., speaks during the Internet.org summit in New Delhi, India, on Thursday, Oct. 9, 2014. Zuckerberg said a lack of relevant local language content is the biggest barrier to the 4.4 billion people globally who don't have Internet access. Photographer: Udit Kulshrestha/Bloomberg via Getty Images
SUN VALLEY, ID - JULY 10: Mark Zuckerberg, chief executive officer and founder of Facebook Inc., and his wife Priscilla Chan attend the Allen & Company Sun Valley Conference on July 10, 2014 in Sun Valley, Idaho. Many of the world's wealthiest and most powerful businessmen from media, finance, and technology attend the annual week-long conference which is in its 32nd year. (Photo by Scott Olson/Getty Images)
SAN FRANCISCO, CA - APRIL 30: Facebook CEO Mark Zuckerberg delivers the opening kenote at the Facebook f8 conference on April 30, 2014 in San Francisco, California. Facebook CEO Mark Zuckerberg kicked off the annual one-day F8 developers conference. (Photo by Justin Sullivan/Getty Images)
BARCELONA, SPAIN - FEBRUARY 24: Co-Founder, Chairman and CEO of Facebook Mark Zuckerberg arrives to his Keynote conference as part of the first day of the Mobile World Congress 2014 at the Fira Gran Via complex on February 24, 2014 in Barcelona, Spain. The annual Mobile World Congress hosts some of the world's largest communication companies, with many unveiling their latest phones and gadgets. The show runs from February 24 - February 27. (Photo by David Ramos/Getty Images)
Mark Zuckerberg, chairman and chief executive of Facebook, Inc., walks to lunch at the Allen & Company Sun Valley Conference in Sun Valley, Idaho, Wednesday, July 10, 2013. (AP Photo/Rick Bowmer)
Facebook CEO Mark Zuckerberg, right, walks with Laura Arrillaga-Andressen, center, wife of Marc Andressen, left, at the Allen & Company Sun Valley Conference in Sun Valley, Idaho, Wednesday, July 11, 2012. Marc Andreessen is founder of Netscape. (AP Photo/Paul Sakuma)
NEW YORK, NY - NOVEMBER 07: Designer Karl Lagerfeld attends the Louis Vuitton Monogram Celebration at Museum of Modern Art on November 7, 2014 in New York City. (Photo by Monica Schipper/FilmMagic)
BOULOGNE-BILLANCOURT, FRANCE - OCTOBER 20: (L-R) Anna Wintour and Karl Lagerfeld attend the Foundation Louis Vuitton Opening at Foundation Louis Vuitton on October 20, 2014 in Boulogne-Billancourt, France. (Photo by Rindoff/Charriau/French Select/Getty Images)
PARIS, FRANCE - SEPTEMBER 30: Karl Lagerfeld attends the CR Fashion Book Issue NÂ°5 launch party as part of the Paris Fashion Week Womenswear Spring/Summer 2015 on September 30, 2014 in Paris, France. (Photo by Pierre Suu/Getty Images)
PARIS, FRANCE - SEPTEMBER 30: Anna Wintour and Karl Lagerfeld attends the Chanel show as part of the Paris Fashion Week Womenswear Spring/Summer 2015 on September 30, 2014 in Paris, France. (Photo by Rindoff/Dufour/French Select/Getty Images)
MILAN, ITALY - SEPTEMBER 21: Karl Lagerfeld attends Vogue Italia 50th Anniversary during Milan Fashion Week Womenswear Spring/Summer 2015 on September 21, 2014 in Milan, Italy. (Photo by Jacopo Raule/WireImage)
ARCHIV: Apple CEO Steve Jobs walks in front of the Apple logo before unveiling the new AppleTV and iPhone during his keynote address at MacWorld Conference (Foto vom 09.01.07). Der Apple-Gruender Steve Jobs ist im Alter von 56 Jahren gestorben. "In tiefer Trauer teilen wir mit, dass Steve Jobs heute gestorben ist", erklaerte der Konzern am Mittwoch (05.10.11) in San Francisco. (zu dapd-Text) Foto: PAUL SAKUMA/AP/dapd
Apple CEO Steve Jobs speaks at an Apple event at Apple headquarters in Cupertino, Calif., Wednesday, Oct. 20, 2010, announcing a new version of iLife, Apple Inc.'s programs for managing photos, editing videos and other tasks. (AP Photo/Tony Avelar)
In this July 16, 2010 photo shows Apple's Tim Cook, left, and Steve Jobs, right, during a meeting at Apple in Cupertino, Calif. Cook takes over as CEO for Apple after Jobs resigned. (AP Photo/Paul Sakuma)
Apple CEO Steve Jobs talks about the Apple iPhone4 at Apple headquarters in Cupertino, Calif., Friday, July 16, 2010. (AP Photo/Paul Sakuma)
American singer Johnny Cash stands next to an Israeli soldier, after visiting the Church of the Nativity, seen in the background, in Bethlehem, West Bank, October 26, 1977. (AP Photo)
Country music legend Johnny Cash performs in November 1985 in Nashville, Tenn. Cash, known as "The Man in Black" and famous for songs like "I Walk the Line," "Ring of Fire" and "A Boy Named Sue," died Friday, Sept. 12, 2003, from complications from diabetes in Nashville. (AP Photo/Mark Humphrey)
THE JOHNNY CASH SHOW - Johnny Cash On Set - Shoot Date: December 19, 1969. (Photo by ABC Photo Archives/ABC via Getty Images)
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It's the same "I'm too busy and important to waste time in outfit-picking" reason other tech moguls had for their uniforms. Like Segway founder Dean Kamen's denim-on-denim with work boots, or Steve Jobs' black turtleneck, dad jeans, and white sneakers.
But the phenomenon isn't unique to tech billionaires. Fashion industry success stories like Michael Kors, Carolina Herrera, Karl Lagerfeld, and Tom Ford all stick to the same basic outfit every day. Author Tom Wolfe made a white suit his daily signature, and of course being 'the man in black' helped make Johnny Cash a legend.