Ozzy Osbourne's alleged mistress is suing his daughter, Kelly Osbourne

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Kelly Osbourne Is Being Sued by Her Dad's Alleged Mistress

Kelly Osbourne is being sued by the woman her father allegedly had an affair with.

TMZ reports Michelle Pugh is saying Osbourne "slut-shamed, bullied and harassed" her when she sent out several tweets about Pugh after news of the alleged affair broke.

SEE MORE: Ozzy Osbourne Speaks Out After Split From Sharon: 'I Have Been Sober'

Pugh says she met Ozzy Osbourne through her career as a celebrity hair stylist. She told People, "My relationship was more with this really nice, sweet, funny and cool guy."

Pugh claims Ozzy Osbourne broke off their three-year affair in May of this year. He recently said he was receiving treatment for a sex addiction.

See photos of Kelly Osbourne through the years:

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Kelly Osbourne through the years
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Kelly Osbourne through the years
Photo by: Stephen Trupp STAR MAX, Inc. copyright 2002 All Rights Reserved 6/1/02 Kelly Osbourne at the MTV Movie Awards. (The Shrine Auditorium, CA) (Star Max via AP Images)
Kelly Osbourne is joined by her father, Ozzy Osbourne, following her rendition of Madonna's "Papa Don't Preach" at the annual Wango Tango Music Festival at the Rose Bowl in Pasadena, Calif., Saturday, June 15, 2002. A wide variety of performers including Mary J. Blige, Celine Dion and No Doubt were featured in the all-day music festival. (AP Photo/Chris Pizzello)
Photo by: Peter Kramer STAR MAX, Inc. - copyright 2002 ALL RIGHTS RESERVED Telephone/Fax: (212) 995-1196 7/15/02 Kelly Osbourne at the Cosmo Girl cover unveiling party. (NYC) (Star Max via AP Images)
The Osbourne family pose as they arrive at the 54th Annual Primetime Emmy Awards Sunday, Sept. 22, 2002, at the Shrine Auditorium in Los Angeles. From left are Kelly, Ozzy, Sharon, Robert Marcato and Jack. Marcato is an 18-year-old friend of Kelly's who recently moved in with the family after his mother died of the same type of cancer afflicting Sharon. (AP Photo/Laura Rauch)
Photo by: Peter Kramer STAR MAX, Inc. - copyright 2002 ALL RIGHTS RESERVED Telephone/Fax: (212) 995-1196 11/26/02 Kelly Osbourne at Virgin Records to promore her new CD "Shut Up". (NYC) (Star Max via AP Images)
Photo by: Lee Roth STAR MAX, Inc. - copyright 2003 ALL RIGHTS RESERVED Telephone/Fax: (212) 995-1196 1/13/03 Kelly Osbourne at the 30th Annual American Music Awards. (Los Angeles, CA) (Star Max via AP Images)
Photo by: Lee Roth STAR MAX, Inc. - copyright 2003 ALL RIGHTS RESERVED Telephone/Fax (212) 995-1196 5/31/03 Kelly Osbourne at the 2003 "MTV Movie Awards". (Los Angeles, CA) (Star Max via AP Images)
The Osbournes, from left, Sharon, Jack, Ozzy, and Kelly are photographed as they arrive at the EMI party after the Grammy Awards Sunday, Feb. 8, 2004 in Los Angeles. (AP Photo/Kim D. Johnson)
Photo by: Tim Goodwin/starmaxinc.com �2004 ALL RIGHTS RESERVED Telephone/Fax: (212) 995-1196 2/24/04 Kelly Osbourne at "Ten - GM Rocks Award Season with Cars, Stars and Fashion". (Hollywood, CA) (Star Max via AP Images)
Photo by: Lee Roth/starmaxinc.com �2004 ALL RIGHTS RESERVED Telephone/Fax: (212) 995-1196 5/07/04 Ozzy Osbourne with wife Sharon Osbourne and daughter Kelly Osbourne at the Covenant House California Dove Awards Honors for the "Monster" Team. (Beverly Hills, CA) (Star Max via AP Images)
Photo by: Mitch Gerber/starmaxinc.com ©2004 ALL RIGHTS RESERVED Telephone/Fax: (212) 995-1196 10/3/04 Kelly Osbourne at the premiere of "Taxi". (NYC) (Star Max via AP Images)
Kelly Osbourne poses at Chelsea Market in New York on April 25, 2005. Osbourne has a new album titled "Sleeping in the Nothing." (AP Photo/Jim Cooper)
Sharon Osborne, right with her daughter Kelly and her husband Ozzy arrive at the home of Real Madrid and England soccer star David Beckham, in Sawbridgeworth England, 40 miles north of London for his eve of World Cup party, Sunday May 21, 2006. (AP Photo/Alastair Grant)
Singer Kelly Osbourne arrives for the grand opening of the Ripley's Believe It or Not Odditorium Thursday, June 21, 2007 in New York. (AP Photo/Jason DeCrow)
TV personality Kelly Osbourne before fashion designer Vivienne Westwood's Autumn/Winter 2008 collection at London Fashion Week in London, Thursday, Feb. 14, 2008. (AP Photo/Kirsty Wigglesworth)
Kelly Osbourne arrives at a concert celebrating the launch of the video game "DJ Hero" in Los Angeles on Monday, June 1, 2009. (AP Photo/Matt Sayles)
Singer Kelly Osbourne poses on the press line at the reopening celebration of the Beverly Hills Burberry store in Beverly Hills, Calif. on Monday, Oct. 20, 2008. (AP Photo/Dan Steinberg)
Kelly Osbourne arrives at the "Los Premios MTV 2009" on Thursday, Oct. 15, 2009, at the Gibson Amphitheatre in Universal City, Calif. (AP Photo/Chris Pizzello)
Kelly Osbourne arrives The Weinstein Company Pre-Oscar party in West Hollywood, Calif. on Saturday, March 6, 2010. (AP Photo/Kristian Dowling)
Kelly Osbourne arrives at the Us Weekly Hot Hollywood Style Celebration on Thursday April 22, 2010, in Los Angeles. (AP Photo/Matt Sayles)
Jack, left, and Kelly Osbourne arrive at Spike TV "Guy's Choice" awards in Culver City, Calif., on Saturday, June 5, 2010. (AP Photo/Matt Sayles)
Kelly Osbourne arrives at the 62nd Primetime Emmy Awards Sunday, Aug. 29, 2010, in Los Angeles. (AP Photo/Matt Sayles)
Kelly Osbourne is seen before the Anna Sui spring 2011 collection is shown during Fashion Week in New York, Wednesday, Sept. 15, 2010. (AP Photo/Diane Bondareff)
Kelly Osbourne arrives at the 38th Annual American Music Awards on Sunday, Nov. 21, 2010 in Los Angeles. (AP Photo/Chris Pizzello)
Kelly Osbourne arrives at the Scream Awards on Saturday Oct. 16, 2010, in Los Angeles. (AP Photo/Matt Sayles)
Kelly Osbourne arrives at an Evening of "Southern Style" presented by The St. Bernard Project and the Spears Family in Beverly Hills, Calif., Wednesday, May 11, 2011. The St. Bernard Project is a non-profit organization that provides relief work for survivors of Hurricane Katrina. (AP Photo/Matt Sayles)
LOS ANGELES, CA - SEPTEMBER 18: Kelly Osbourne arrives at the Academy of Television Arts & Sciences 63rd Primetime Emmy Awards at Nokia Theatre L.A. Live on September 18, 2011 in Los Angeles, California. (Photo by Scott Kirkland/Invision for the Academy of Television Arts & Sciences/AP Images)
FILE - In this Jan. 15, 2012 file photo, TV personality Kelly Osbourne arrives at the 69th Annual Golden Globe Awards in Los Angeles. Gray heads have been popping up on runways and red carpets, on models and young celebrities for months. There's Lady Gaga and Kelly Osbourne _ via dye _ and Hollywood royalty like Oscar-winning British actress Helen Mirren. (AP Photo/Matt Sayles, file)
Kelly Osbourne arrives at the 54th annual GRAMMY Awards on Sunday, Feb. 12, 2012 in Los Angeles. (AP Photo/Chris Pizzello)
Television personality Kelly Osbourne attends the MAC Viva Glam new product campaign launch event at Stage 37 on Wednesday, Feb. 15, 2012 in New York. (AP Photo/Evan Agostini)
From left, Sharon Osbourne, Ozzy Osbourne, and Kelly Osbourne arrive at the 2013 "An Evening With Women" event at the Beverly Hilton Hotel on Saturday, May 18, 2013 in Los Angeles. (Photo by Richard Shotwell/Invision/AP)
TV Personality Kelly Osbourn earrives at the 19th Annual Screen Actors Guild Awards at the Shrine Auditorium in Los Angeles on Sunday Jan. 27, 2013. (Photo by Jordan Strauss/Invision/AP)
Kelly Osbourne at Beautycon Los Angeles 2013 Day 2 held at Siren Studios on Saturday August 24, 2013 in Los Angeles. (Photo by Alexandra Wyman/Invision for Invision for Made With Elastic/AP Images)
Kelly Osbourne arrives at the 65th Primetime Emmy Awards at Nokia Theatre on Sunday Sept. 22, 2013, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
Kelly Osbourne poses at The Art of Elysium's Heaven Gala on Saturday, Jan. 11, 2014, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)
Kelly Osbourne attends the NBCUniversal Cable Entertainment 2014 Upfront at the Javits Center on Thursday, May 15, 2014, in New York. (Photo by Evan Agostini/Invision/AP)
Kelly Osbourne arrives at the 2014 amfAR Inspiration Gala at Milk Studios on Wednesday, Oct. 29, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
Kelly Osbourne arrives at the 21st annual Screen Actors Guild Awards at the Shrine Auditorium on Sunday, Jan. 25, 2015, in Los Angeles. (Photo by Richard Shotwell/Invision/AP)
Kelly Osbourne arrives at the 2015 CFDA Fashion Awards at Alice Tully Hall on Monday, June 1, 2015, in New York. (Photo by Evan Agostini/Invision/AP)
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Pugh seemed to describe their relationship as romantic. But a statement from a spokesperson for Ozzy Osbourne suggests that the rocker didn't feel the same way.

It read: "He is sorry if Ms. Pugh took their sexual relationship out of context. He would like to apologize to the other women he has been having sexual relationships with. Since his relationship with Ms. Pugh was exposed, Ozzy has gone into intense therapy."

He and his wife, Sharon Osbourne, separated earlier this year, but Osbourne said their marriage was "back on track" last month.

Kelly Osbourne has yet to comment on the lawsuit.

This video includes clips from CBS / "The Late Late Show" and Time and images from Getty Images.

RELATED: Sharon Osbourne opens up about her husband's sex addiction:

Sharon Osbourne Opens Up About Ozzy's Sex Addiction

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