Kelly Osbourne on Giuliana Rancic: Her behavior has been 'heartbreaking'

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In the month since Kelly Osbourne quit E!'s Fashion Police, the singer and fashion designer has kept silent about the behind the scenes drama that led to her departure.

However, she's now opening up a bit to say that he was disappointed by the actions of her former co-host Guiliana Rancic.

NEWS: Kelly Osbourne Opens Up About Leaving 'Fashion Police': 'I Want to Try New Things'

"There's been so much drama surrounded by what went on at Fashion Police that I have chosen to keep quiet about," Osbourne told People on Wednesday. "But I will say this: Giuliana is not often wrong. She really isn't, but it's been really, really heartbreaking to see her behavior that has transpired when she did get caught being wrong. That's what broke my heart."

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Giuliana Rancic updated 4/9/15
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Kelly Osbourne on Giuliana Rancic: Her behavior has been 'heartbreaking'
SYDNEY, AUSTRALIA - MARCH 10: Giuliana Rancic attends a media call ahead of the 2015 ASTRA Awards on March 10, 2015 in Sydney, Australia. The ASTRA Awards is an annual event rewarding creativity, diversity and quality in Australian subscription television. (Photo by Ryan Pierse/Getty Images)
SYDNEY, AUSTRALIA - MARCH 10: Giuliana Rancic attends a media call ahead of the 2015 ASTRA Awards on March 10, 2015 in Sydney, Australia. The ASTRA Awards is an annual event rewarding creativity, diversity and quality in Australian subscription television. (Photo by Don Arnold/WireImage)
SYDNEY, AUSTRALIA - MARCH 10: Giuliana Rancic attends a media call ahead of the 2015 ASTRA Awards on March 10, 2015 in Sydney, Australia. The ASTRA Awards is an annual event rewarding creativity, diversity and quality in Australian subscription television. (Photo by Ryan Pierse/Getty Images)
SYDNEY, AUSTRALIA - MARCH 12: Giuliana Rancic arrives at the 2015 ASTRA Awards at the Star on March 12, 2015 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images for the ASTRA Awards)
SYDNEY, AUSTRALIA - MARCH 10: Giuliana Rancic attends a media call ahead of the 2015 ASTRA Awards on March 10, 2015 in Sydney, Australia. The ASTRA Awards is an annual event rewarding creativity, diversity and quality in Australian subscription television. (Photo by Don Arnold/WireImage)
SYDNEY, AUSTRALIA - MARCH 12: Giuliana Rancic presents on stage during the 2015 ASTRA Awards at The Star on March 12, 2015 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images for the ASTRA Awards)
SYDNEY, AUSTRALIA - MARCH 12: Alex Perry and Giuliana Rancic present on stage during the 2015 ASTRA Awards at The Star on March 12, 2015 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images for the ASTRA Awards)
Giuliana Rancic arrives at the 72nd annual Golden Globe Awards at the Beverly Hilton Hotel on Sunday, Jan. 11, 2015, in Beverly Hills, Calif. (Photo by John Shearer/Invision/AP)
Giuliana Rancic arrives at the People's Choice Awards at the Nokia Theatre on Wednesday, Jan. 7, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
Roberto Coin, left, and Giuliana Rancic attend a celebration of The Hollywood Reporter's Power 100 Women in Entertainment breakfast at Milk Studios on Wednesday, Dec. 10, 2014, in Los Angeles. (Photo by Tonya Wise/Invision for The Hollywood Reporter/AP Images)
Giuliana DePandi Rancic attends the New York Fashion Week Fall 2015 at The Lincoln Center in New York, NY on February 13, 2015.
Giuliana Rancic arriving at the People's Choice Awards at the Nokia Theatre on Wednesday, Jan. 7, 2015, in Los Angeles.
Bill and Giuliana Rancic stop by AOL Studios to tape a segment for the Arianna Huffington video series 'Fearless' in New York Monday April 2, 2012. (Damon Dahlen, AOL)
Bill and Giuliana Rancic stop by AOL Studios to tape a segment for the Arianna Huffington video series 'Fearless' in New York Monday April 2, 2012. (Damon Dahlen, AOL)
Italian American TV personality Giuliana Rancic arrives at the 72nd Annual Golden Globe Awards, Golden Globes, in Beverly Hills, Los Angeles, USA, on 11 January 2015. Photo: Hubert Boesl- NO WIRE SERVICE -
TV personality Giuliana Rancic arriving at the 71st annual Golden Globe Awards held at the Beverly Hilton in Beverly Hills, Los Angeles, CA, USA, January 12, 2014.
Giuliana Rancic arrives at the 65th Primetime Emmy Awards at Nokia Theatre on Sunday, Sept. 22, 2013, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
Giuliana Rancic arrives at The Wishing Well Winter Gala at the Beverly Wilshire Hotel, on Tuesday, December, 4, 2013 in Beverly Hills, Calif. (Photo by Richard Shotwell/Invision/AP)
Giuliana Rancic attending the Hollywood in Bright Pink Party in Los Angeles, California, USA.
Giuliana Rancic arrives at the 56th Annual Grammy Awards in Los Angeles on January 26, 2014.
Giuliana Rancic arrives at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
IMAGE DISTRIBUTED FOR P.F CHANG'S - Giuliana Rancic attends the #PaintPFChangsPink kick-off event at P.F. Chang's in Sherman Oaks on Tuesday, September 30, 2014. "As a breast cancer survivor, this is a cause near and dear to my heart," said Rancic. "I'm happy to support P.F. Chang's in their goal of raising $100,000 for the National Breast Cancer Foundation. That money will make a difference in so many lives." For every photo shared using #PaintPFChangsPink in front of the pink horses at any P.F. Chang's location during the month of October, or the purchase of a sushi roll, P.F. Chang's will make a $1 donation up to $100,000. (Jeff Lewis/AP Images for P.F. Chang's)
Giuliana Rancic arriving for the 70th Annual Golden Globe Awards Ceremony, held at the Beverly Hilton Hotel in Los Angeles, CA on January 13, 2013.
Giuliana Rancic attending day 2 of the NBC Universal TCA Press Tour in Los Angeles, California.
Miss Universe hosts Andy Cohen, left, and Giuliana Rancic, center, react as Miss USA, Olivia Culpo, answers a question during the Miss Universe competition, Wednesday, Dec. 19, 2012, in Las Vegas. Culpo was crowned Miss Universe. (AP Photo/Julie Jacobson)
Kelly Osbourne, Giuliana Rancic during the 2012 Miss USA Competition at Planet Hollywood Resort & Casino in Las Vegas
Kelly Osbourne and Giuliana Rancic arrive at the 65th Primetime Emmy Awards at Nokia Theatre on Sunday, Sept. 22, 2013, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
LOS ANGELES, CA - JANUARY 18: (l-r) TV personalities Kelly Osbourne, Ross Mathews and Giuliana Rancic attends 20th Annual Screen Actors Guild Awards at The Shrine Auditorium on January 18, 2014 in Los Angeles, California. (Photo by Stefanie Keenan/WireImage)
LOS ANGELES, CA - FEBRUARY 10: TV personalities Kelly Osbourne (L) and Giuliana Rancic attend the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Larry Busacca/WireImage)
LOS ANGELES, CA - FEBRUARY 10: Kelly Osbourne and Giuliana Rancic arrive at the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Larry Busacca/WireImage)
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Osbourne quit Fashion Police in the wake of controversy surrounding off-color comments made by Rancic regarding singer Zendaya Coleman's dreadlocks that some found to be racially insensitive.

NEWS: Zendaya Slams 'Fashion Police' Host's 'Ignorant Slurs' About Her Oscars Hairstyle

After Zendaya called Rancic out for making "ignorant slurs," the host apologized and emphatically denied that she would never intentionally make racist comments. However Osbourne and host Kathy Griffin still quit in the days following.

Osbourne's comments to People are just the latest blow in the feud between the two former co-stars. On Monday, Rancic appeared on the Today show to "tell the truth." Soon after the interview, Osbourne tweeted, "Liars ALWAYS get caught!"

In her interview with People, Osbourne made conciliatory remarks that indicated she wanted to move past the Fashion Police drama.

VIDEO: Zendaya Accepts Giuliana Rancic's Apology After Making Anti-Dreadlocks Comments

"Do we really need to be wasting ... time talking about three b*tches not getting along, or so you think?" Osbourne said. "It's so small in the grand scheme of things."

For more on the controversial drama between Rancic and Zendaya, check out the video below.

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