David Letterman's mother and 'Late Show' regular, Dorothy Mengering, dies at 95

David Letterman's mother, Dorothy Mengering, died at the age of 95, a rep for the Letterman family confirmed to CBS News.

Mengering was a regular guest on The Late Show when Letterman was hosting, and made her first appearance on the show during the 1994 Winter Olympics, according to The Hollywood Reporter, and went on to be a correspondent for the Nagano, Japan and Salt Lake City winter games in addition to doing a segment for the London Olympics.

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David Letterman, Late Night, through the years
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David Letterman, Late Night, through the years
NEW YORK, UNITED STATES: US Vice President and Democratic presidential candidate Al Gore (R) with talk show host David Letterman 14 September, 2000 after the taping of Letterman's show at the Sullivan Theater in New York City. AFP PHOTO/ Luke FRAZZA (Photo credit should read LUKE FRAZZA/AFP/Getty Images)
NEW YORK, UNITED STATES: Republican presidental candidate and Texas Governor George W. Bush (L) poses for photographers with David Letterman after concluding taping of the 19 October 2000 Late Show with David Letterman in New York. Bush read the Top Ten list poking fun at what he might do if elected. AFP Photo by Paul J. RICHARDS (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
BAGHDAD, IRAQ - DECEMBER 24: In this handout photo provided by the U.S. Air Force, 'Late Show' television host David Letterman entertains soldiers at the Coalition Provisional Authority headquarters December 24, 2003 in Baghdad, Iraq. (Photo by Reynaldo Ramon/U.S. Air Force via Getty Images)
NEW YORK - MAY 7: Tina Fey takes off her dress after her last appearance on the CBS Late Show with David Letterman, Thursday May 7, 2015 on the CBS Television Network (Photo by John Paul Filo/CBS via Getty Images)
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WATCH: David Letterman Gives Emotional, Star-Studded Farewell to Late Show

Often referred to as "Dave's Mom" or "Dave's Mom Dorothy" on The Late Show, she appeared in a Thanksgiving segment called "Guess Mom's Pies," and often made Mother's Day visits as well as participated in "Top 10" lists. She also published a cookbook in 1996 called Home Cookin' With Dave's Mom.

On Tuesday, Stephen Colbert, who is the current host of The Late Show, tweeted out his condolences, writing: "I'm so sorry to hear of Dorothy Mengering's death, and so grateful that Dave shared her with us."

WATCH: Stephen Colbert Gives Tearful, On-Air Eulogy To Mother Lorna

News of Mengering's death sadly comes the same week as Letterman's birthday. He turns 70 on Wednesday, April 12.

WATCH: David Letterman Suggests Late Show Should Have Gone to a Woman After He Retired

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David Letterman's fashion over the years
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David Letterman's fashion over the years
THE TONIGHT SHOW STARRING JOHNNY CARSON -- Pictured: Guest host David Letterman on March 26, 1979 -- Photo by: Paul Drinkwater/NBC/NBCU Photo Bank
LOS ANGELES - FEBRUARY 8: MORK AND MINDY. David Letterman as Ellsworth in ' Mork goes Erk'. Original airdate February 8, 1979. Image is a screen grab. (Photo by CBS via Getty Images)
THE DAVID LETTERMAN SHOW -- Season 1 -- Pictured: (l-r) -- Host David Letterman, cast/writers Edie McClurg, Valri Bromfield, Gerard Mulligan (Photo by: NBC/NBCU Photo Bank via Getty Images)
THE DAVID LETTERMAN SHOW -- Pictured: Host David Letterman with guests -- (Photo by: NBC/NBCU Photo Bank via Getty Images)
THE DAVID LETTERMAN SHOW -- Season 1 -- Pictured: (l-r) -- Host David Letterman in Shubert Alley (Photo by: NBC/NBCU Photo Bank via Getty Images)
David Letterman during 39th Annual Emmy Awards - September 20, 1987 at Pasadena Civic Auditorium in Pasadena, California, United States. (Photo by Jim Smeal/WireImage)
David Letterman during The 37th Annual Emmy Awards at Pasadena Civic Auditorium in Pasadena, CA, United States. (Photo by Ron Galella/WireImage)
LOS ANGELES - CIRCA 1983: Host David Letterman poses for a portrait in c.1983 in Los Angeles, California. (Photo by Donaldson Collection/Michael Ochs Archives/Getty Images)
UNITED STATES - APRIL 19: NBC Newsman Edwin Newman and David Letterman on the David Letterman show. (Photo by The LIFE Picture Collection/Getty Images)
UNITED STATES - APRIL 01: Jerry Garcia, Bob Weir, and David Letterman (Photo by The LIFE Picture Collection/Getty Images)
THE TONIGHT SHOW STARRING JOHNNY CARSON -- Pictured: Guest host David Letterman on March 26, 1979 -- Photo by: Paul Drinkwater/NBC/NBCU Photo Bank
UNITED STATES - APRIL 01: David Letterman with Jerry Garcia and Bob Weir (Photo by The LIFE Picture Collection/Getty Images)
NEW YORK - JULY 7: Headshot of David Letterman for the show, 'Mary.' Image dated July 7, 1978. (Photo by CBS via Getty Images)
NEW YORK - FEBRUARY 26: Comedian Joan Rivers shares a laugh with Dave when she visits the Late Show with David Letterman Tuesday Feb. 26, 2013 on the CBS Television Network. (Photo by Jeffrey R. Staab/CBS via Getty Images)
LATE NIGHT WITH DAVID LETTERMAN -- Pictured: (l-r) Comedian Jay Leno, host David Letterman -- (Photo by: NBC/NBCU Photo Bank via Getty Images)
Portrait of American talk show host David Letterman smiling at his home, Westchester County, New York, March 1984. (Photo by Susan Wood/Getty Images)
UNITED STATES - APRIL 01: David Letterman (Photo by The LIFE Picture Collection/Getty Images)
THE DAVID LETTERMAN SHOW -- Season 1 -- Pictured: (l-r) -- Host David Letterman (Photo by: NBC/NBCU Photo Bank via Getty Images)
THE DAVID LETTERMAN SHOW -- Episode 36 -- Pictured: (l-r) President Jimmy Carter's son James 'Chip' Carter, host David Letterman on August 11, 1980 -- (Photo by: NBC/NBCU Photo Bank via Getty Images)
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