Joan Rivers in the 1960s. (Photo by Hulton Archive/Getty Images)
Joan Rivers Through The Years
Comedienne and actress Joan Rivers in the 1980s. (Photo by Hulton Archive/Getty Images)
Joan Rivers Through The Years
Comedienne Joan Rivers poses for photographers as she visits a friend in a residence next to the synagogue where actress Ellen Barkin and billionaire Ron Perelman are to be wed June 28, 2000 in New York City. (Photo by George De Sota/Liaison)
Joan Rivers Through The Years
E! Entertainment's fashion hosts, Joan Rivers, right, and her daughter Melissa, arrive at the 43rd Annual Grammy Awards February 21, 2001 at Staples Center in Los Angeles, CA. (Photo by Laura Farr/Newsmakers)
Joan Rivers Through The Years
Joan Rivers attends a benefit evening for the Michael J. Fox Foundation for Parkinson's Research December 8, 2001 at Roseland Ballroom in New york City. (Photo by George De Sota/Getty Images)
Joan Rivers Through The Years
Joan Rivers arrives at the Costume Institute Gala to celebrate the clothes of Jacqueline Kennedy April 23, 2001 at the Metropolitan Museum of Art in New York City. (Photo by George De Sota/Newsmakers)
Joan Rivers Through The Years
Undated: Joan and Melissa Rivers. (Photo by Diane Freed)
Joan Rivers Through The Years
Undated: Joan Rivers. (photo by Newsmakers)
Joan Rivers Through The Years
Talk show host Joan Rivers attends the 44th Annual Grammy Awards at Staples Center February 27, 2002 in Los Angeles, CA. (Photo by Frederick M. Brown/Getty Images)
Joan Rivers Through The Years
Actress Joan Rivers (L) and daughter Melissa arrive for the 10th Annual ESPY Awards at the Kodak Theatre on July 10, 2002 in Hollywood, California. (Photo by Robert Mora/Getty Images)
Joan Rivers Through The Years
Joan Rivers attends the Fifi Awards June 5, 2001 at Radio City Music Hall in New York City. (Photo by Jimi Celeste/Getty Images)
Joan Rivers Through The Years
Actress Oprah Winfrey is interviewed by Joan Rivers at the 54th Annual Primetime Emmy Awards at the Shrine Auditorium on September 22, 2002 in Los Angeles, California. (Photo by Robert Mora/Getty Images)
Joan Rivers Through The Years
Actor Martin Sheen is interviewed by Joan Rivers at the 54th Annual Primetime Emmy Awards at the Shrine Auditorium on September 22, 2002 in Los Angeles, California. (Photo by Robert Mora/Getty Images)
Joan Rivers Through The Years
Joan and Melissa Rivers arrive at the 72nd Annual Academy Awards, March 26, 2000 in Los Angeles, CA. (Photo by David McNew)
Joan Rivers Through The Years
Joan Rivers (L) and her daughter Melissa arrive at the Moulin de Mougins restaurant to attend an annual AIDS benefit during the 55th annual Cannes Film Festival May 23, 2002 in Mougins, south eastern France. The event will benefit the American Foundation for AIDS Research (amfAR). (Photo by Pascal Le Segretain/Getty Images)
Joan Rivers Through The Years
Actress Joan Rivers poses during InStyle Golden Globes after party at The Palm Court at the Beverly Hilton Hotel on January 19, 2003 in Beverly Hills, California. (Photo by Jon Kopaloff/Getty Images)
Joan Rivers Through The Years
Joan Rivers arrives at a special screening of "The Magdalene Sisters" at the Lighthouse International July 22, 2003 in New York City. (Photo by Scott Gries/Getty Images)
Joan Rivers Through The Years
Blaine Trump (left), Joan Rivers (center), and Star Jones hold winners ribbons at the 8th Annual Race to Deliver to benefit God's Love We Deliver in Central Park in New York City, 11/18/01. GLWD provides freshly prepared meals to people living with Aids who cannot shop or cook for themselves. (Photo by Frank Micelotta/ImageDirect.)
Joan Rivers Through The Years
Melissa Rivers in Pamela Dennis and Joan Rivers at an Emmy Party on September 10, 2000 held in Los Angeles, CA (Photo Scott Gries/Getty Images)
Joan Rivers Through The Years
Joan Rivers attends the 55th Annual Primetime Emmy Awards at the Shrine Auditorium September 21, 2003 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
Joan Rivers Through The Years
Actor Jerry Orbach (C) and television personality Joan Rivers (R) attend the Actor's Fund Annual Gala Dinner and Tribute on November 17, 2003 at Cipriani's Restaurant in New York City. (Photo by Sara Jaye/Getty Images)
Joan Rivers Through The Years
TV personality Joan Rivers, Blaine Trump and model Tyson Beckford arrive at the10th annual Race To Deliver aids benefit November 23, 2003 in New York City. (Photo by Peter Kramer/Getty Images)
Joan Rivers Through The Years
TV personality Joan Rivers and mascot Ben arrive at the10th annual Race To Deliver aids benefit November 23, 2003 in New York City. (Photo by Peter Kramer/Getty Images)
Joan Rivers Through The Years
US television personality Joan Rivers arrives for the Golden Globe Awards ceremony 25 January 2004 at the Beverly Hilton in Beverly Hills, CA. (AFP PHOTO / ROBYN BECK /Getty Images)
Joan Rivers Through The Years
Joan Rivers makes a cement impression of her hands during her induction into The Gleasons Walk Of Stars March 25, 2004 in Miami, Florida. (Photo by Tom Grizzle/Getty Images)
Joan Rivers Through The Years
Comedian Joan Rivers, actor Antonio Banderas and actress Julie Andrews attend the screening of "Shrek2" at the Beekman Theatre May 17, 2004 in New York City. (Photo by Paul Hawthorne/Getty Images)
Joan Rivers Through The Years
Joan and Melissa Rivers arrive at the 11th annual Children Affected by AIDS Dream Halloween fundraiser on October 30, 2004, in Santa Monica, California. (Photo by Ana Elisa Fuentes/Getty Images)
Joan Rivers Through The Years
TV hosts Joan and Melissa Rivers at the TV Guide stage during arrivals to the 47th Annual Grammy Awards at the Staples Center February 13, 2005 in Los Angeles, California. (Photo by Getty Images/Getty Images)
Joan Rivers Through The Years
Television personalities Joan Rivers and Melissa Rivers on the red carpet at the 77th Annual Academy Awards at the Kodak Theater on February 27, 2005 in Hollywood, California. (Photo by Carlo Allegri/Getty Images)
Joan Rivers Through The Years
Actor Cynthia Nixon and TV personality Joan Rivers make an appearance on the Today Show for "Make a Difference Today" at Humanity Plaza on September 28, 2005 in New York City. (Photo by Peter Kramer/Getty Images)
Joan Rivers Through The Years
Television personalities Joan Rivers, Bill Maher, and Melissa Rivers attend the HBO Golden Globe after party held at the Beverly Hilton on January 16, 2006 in Beverly Hills, California. (Photo by Vince Bucci/Getty Images)
Joan Rivers Through The Years
Joan Rivers attends the 28th Annual "FiFi" Awards, June 6, 2000 in New York City. The "FiFi's," the Oscars of the fragrance world, recognize the fragrance stars of the year and honors the industry's creative achievements. (Photo by George De Sota/Liaison)
Joan Rivers Through The Years
Joan Rivers attends the Broadway opening of "The Apple Tree" on December 14, 2006 in New York City. (Photo by Astrid Stawiarz/Getty Images)
Joan Rivers Through The Years
Joan Rivers attends the Bill Blass Fall 2007 fashion show during Mercedes-Benz Fashion Week at the Tent in Bryant Park February 6, 2007 in New York City. (Photo by Evan Agostini/Getty Images for IMG)
Joan Rivers Through The Years
TV personality Joan Rivers attends the 79th Annual Academy Awards held at the Kodak Theatre on February 25, 2007 in Hollywood, California. (Photo by Frazer Harrison/Getty Images)
Joan Rivers Through The Years
Talk show host Larry King and television personality Joan Rivers attend 'Larry King's 50 Years of Broadcasting' celebration at The Four Seasons Restaurant April 18, 2007 in New York City. (Photo by Evan Agostini/Getty Images)
Joan Rivers Through The Years
American personality Joan Rivers participates in the annual Sydney Gay and Lesbian Mardi Gras Parade on Oxford Street on March 7, 2009 in Sydney, Australia. The annual parade, which has been going since June 1978, has a 2009 theme of "Nations United", with the event's intention to raise the visibility of the gay, lesbian, bisexual, transgender, intersex and queer communities. (Photo by Brendon Thorne/Getty Images)
Joan Rivers Through The Years
Joan Rivers and Melissa Rivers attend "The Celebrity Apprentice" season finale at the at American Museum of Natural History on May 10, 2009 in New York City. (Photo by Brad Barket/Getty Images)
Joan Rivers Through The Years
Dennis Rodman and Joan Rivers attend "The Celebrity Apprentice" season finale at the at American Museum of Natural History on May 10, 2009 in New York City. (Photo by Brad Barket/Getty Images)
Joan Rivers Through The Years
Comedians Joan Rivers and Kathy Griffin arrive at the Comedy Central Roast of Joan Rivers held at CBS Studios on July 26, 2009 in Studio City, California. (Photo by Kevin Winter/Getty Images)
Joan Rivers Through The Years
Comedian Joan Rivers onstage at the The Comedy Central Roast Of Joan Rivers held at CBS Studios on July 26, 2009 in Studio City, California. (Photo by Kevin Winter/Getty Images)
Joan Rivers Through The Years
(L-R) Impersonator Jesse Volt, actress Joan Rivers, Gary Dee and Joe Posa promote the TV Land PRIME series "How'd You Get So Rich?" at the CBS Early Show Studio Plaza on August 4, 2009 in New York City. (Photo by Astrid Stawiarz/Getty Images)
Joan Rivers Through The Years
Joan Rivers from the film "Joan Rivers - A Piece of Work" attends the Tribeca Film Festival 2010 portrait studio at the FilmMaker Industry Press Center on April 27, 2010 in New York, New York. (Photo by Larry Busacca/Getty Images for Tribeca Film Festival)
Joan Rivers Through The Years
Nicole Kidman and Joan Rivers during the 16th annual Critics' Choice Movie Awards at the Hollywood Palladium on January 14, 2011 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for VH1)
Joan Rivers Through The Years
Joan Rivers (L) and TV personality Melissa Rivers attend the Elie Tahari Fall 2011 fashion show during Mercedes-Benz Fashion Week at The Stage at Lincoln Center on February 16, 2011 in New York City. (Photo by Stephen Lovekin/Getty Images for IMG)
Joan Rivers Through The Years
Preston Bailey, Joan Rivers and Martha Stewart attend a celebration for the new book "Preston Bailey Flowers" at a private residence on October 4, 2011 in New York City. (Photo by Jason Kempin/Getty Images)
Joan Rivers Through The Years
Joy Philbin, Regis Philbin and Joan Rivers attend a celebration for the new book "Preston Bailey Flowers" at a private residence on October 4, 2011 in New York City. (Photo by Jason Kempin/Getty Images)
Joan Rivers Through The Years
Don King and Joan Rivers attend as Larry King is honored at the 2011 Friars Club Testimonial dinner gala at the Sheraton New York Hotel & Towers on November 14, 2011 in New York City. (Photo by Cindy Ord/Getty Images)
Joan Rivers Through The Years
TV personalities Joan Rivers (L) and Melissa Rivers speak during the E! Entertainment Television lunch panel during the NBCUniversal portion of the 2012 Winter TCA Tour at The Langham Huntington Hotel and Spa on January 7, 2012 in Pasadena, California. (Photo by Frederick M. Brown/Getty Images)
Joan Rivers Through The Years
Kelly Osbourne and Joan Rivers attend the Badgley Mischka Fall 2012 fashion show during Mercedes-Benz Fashion Week at The Theatre at Lincoln Center on February 14, 2012 in New York City. (Photo by Astrid Stawiarz/Getty Images for Mercedes-Benz Fashion Week)
Joan Rivers Through The Years
Joan Rivers is seen around Lincoln Center during Fall 2012 Mercedes-Benz Fashion Week at Lincoln Center on February 14, 2012 in New York City. (Photo by Andrew H. Walker/Getty Images for Mercedes-Benz Fashion Week)
Joan Rivers Through The Years
(L-R) Martha Stewart, Joan Rivers and Star Jones attend the Dennis Basso Fall 2013 fashion show during Mercedes-Benz Fashion Week at The Stage at Lincoln Center on February 12, 2013 in New York City. (Photo by Andy Kropa/Getty Images for Mercedes-Benz Fashion Week)
Joan Rivers Through The Years
Joan Rivers visits "Late Night With Jimmy Fallon" at Rockefeller Center on February 15, 2013 in New York City. (Photo by Theo Wargo/Getty Images)
Joan Rivers Through The Years
Joan Rivers promotes her new book "Diary of a Mad Diva" on June 30, 2014 in New York City. (Photo by Rob Kim/Getty Images)
Joan Rivers Through The Years
Joan Rivers attends "Howard Stern's Birthday Bash" presented by SiriusXM, produced by Howard Stern Productions at Hammerstein Ballroom on January 31, 2014 in New York City. (Photo by Theo Wargo/Getty Images for SiriusXM)
Joan Rivers Through The Years
Joan Rivers visits "The Tonight Show Starring Jimmy Fallon" at Rockefeller Center on February 17, 2014 in New York City. (Photo by Theo Wargo/Getty Images for The Tonight Show Starring Jimmy Fallon)
Joan Rivers Through The Years
Melissa Rivers and Joan Rivers attend the 2014 NBCUniversal Cable Entertainment Upfronts at The Jacob K. Javits Convention Center on May 15, 2014 in New York City. (Photo by Astrid Stawiarz/Getty Images)