Katherine Heigl to join 'Suits' season 8 as Meghan Markle departs

In addition to saying "cheers!" to Meghan Markle, we can now say "cheerio!" to Katherine Heigl!

Months after Markle's exit from USA's "Suits," the "Grey's Anatomy" alum is stepping in as a new series regular for its eighth season.

Heigl will play Samantha Wheeler, "a talented new partner at Pearson Specter Litt who challenges the status quo and will either become the firm’s greatest ally … or most powerful enemy.”

20 PHOTOS
Patrick J. Adams and Meghan Markle together
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Patrick J. Adams and Meghan Markle together
SUITS -- 'Breakfast, Lunch and Dinner' Episode 402 -- Pictured: (l-r) Patrick J. Adams as Michael Ross, Meghan Markle as Rachel Zane -- (Photo by: Ian Watson/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- 'Know When To Fold 'Em' Episode 315 -- PIctured: (l-r) Patrick J. Adams as Michael Ross, Meghan Markle as Rachel Zane -- (Photo by: Shane Mahood/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- 'Denial' Episode 501 -- Pictured: (l-r) Meghan Markle as Rachel Zane, Patrick J. Adams as Michael Ross -- (Photo by: Shane Mahood/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- Season 1 -- Pictured: (l-r) Gina Torres as Jessica Pearson, Rick Hoffmann as Louis Litt, Meghan Markle as Rachel Zane, Gabriel Macht as Harvey Specter, Patrick Adams as Mike Ross -- (Photo by: Frank Ockenfels/USA/NBCU Photo Bank via Getty Images)
SUITS -- Season: 2 -- Pictured: (l-r) Patrick J. Adams as Mike Ross, Meghan Markle as Rachel Zane -- (Photo by: Robert Ascroft/USA Network/NBCU Photo Bank via Getty Images)
TORONTO, ON - SEPTEMBER 11: Actors Patrick J. Adams (L) and Meghan Markle attend the FINCA Canada Fundraiser At TIFF 2012 during the Toronto International Film Festival on September 11, 2012 in Toronto, Canada. (Photo by Alexandra Wyman/Getty Images For FINCA)
SUITS -- 'War' Episode 216 -- Pictured: (l-r) Gabriel Macht as Harvey Specter, Patrick J. Adams as Mike Ross, Meghan Markle as Rachel Zane -- (Photo by: Christos Kalohoridis/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- 'Stay' Episode 310 -- Pictured: (l-r) Patrick J. Adams as Michael Ross, Meghan Markle as Rachel Zane -- (Photo by: Shane Mahood/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- 'Know When To Fold 'Em' Episode 315 -- PIctured: (l-r) Meghan Markle as Rachel Zane, Patrick J. Adams as Michael Ross -- (Photo by: Shane Mahood/USA Network/NBCU Photo Bank via Getty Images)
NBCUNIVERSAL EVENTS -- NBCUniversal Press Tour, January 2014 -- 'Suits' Session -- Pictured: (l-r) Meghan Markle, Patrick J. Adams, Gabriel Macht -- (Photo by: Chris Haston/USA/NBCU Photo Bank via Getty Images)
SUITS -- 'Enough Is Enough' Episode 411 -- Pictured: (l-r) Patrick J. Adams as Michael Ross, Meghan Markle as Rachel Zane -- (Photo by: Shane Mahood/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- 'Intent' Episode 415 -- Pictured: (l-r) Meghan Markle as Rachel Zane, Patrick J. Adams as Mike Ross -- (Photo by: Shane Mahood/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- Season:5 -- Pictured: (l-r) Patrick J. Adams as Michael Ross, Meghan Markle as Rachel Zane -- (Photo by: Nigel Parry/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- 'Not Just a Pretty Face' Episode 416 -- Pictured: (l-r) Patrick J. Adams as Mike Ross, Meghan Markle as Rachel Zane -- (Photo by: Shane Mahood/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- 'Self Defense' Episode 514 -- Pictured: (l-r) Meghan Markle as Rachel Zane, Patrick J. Adams as Michael Ross -- (Photo by: Ben Mark Holzberg/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- 'Turn' Episode 604 -- Pictured: (l-r) Patrick J. Adams as Michael Ross, Meghan Markle as Rachel Zane -- (Photo by: Ian Watson/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- 'P.S.L.' Episode 610 -- Pictured: (l-r) Patrick J. Adams as Michael Ross, Meghan Markle as Rachel Zane -- (Photo by: Shane Mahood/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- Episode 612 -- Pictured: (l-r) Meghan Markle as Rachel Zane, Patrick J. Adams as Michael Ross -- (Photo by: Shane Mahood/USA Network/NBCU Photo Bank via Getty Images)
SUITS -- 'Teeth, Nose, Teeth' Episode 613 -- Pictured: (l-r) Patrick J. Adams as Michael Ross, Meghan Markle as Rachel Zane -- (Photo by: Shane Mahood/USA Network)
SUITS -- 'Full Disclosure' Episode 707 -- Pictured: (l-r) Meghan Markle as Rachel Zane, Patrick J. Adams as Michael Ross -- (Photo by: Shane Mahood/USA Network/NBCU Photo Bank via Getty Images)
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It's a particularly great role for Heigl since she's been a fan of the show for years: "I have watched 'Suits' from the very beginning and feel incredible lucky to be the newest member of the Pearson Specter Litt family."

Heigl will be settling in as the cast readjusts to some big changes. In addition to Markle's departure, Patrick J. Adams will also be absent from season 8.

Hopefully Markle will have time to tune in, but she's already got a lot on her plate with royal responsibilities ramping up!

34 PHOTOS
Prince Harry and Meghan Markle in 2017
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Prince Harry and Meghan Markle in 2017
US actress and fiancee of Britain's Prince Harry Meghan Markle (L) and Britain's Prince Harry (R) stand together as they wait to see off Britain's Queen Elizabeth II after attending the Royal Family's traditional Christmas Day church service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2017. / AFP PHOTO / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
The Duke and Duchess of Cambridge, Meghan Markle and Prince Harry leave the Christmas Day morning church service at St Mary Magdalene Church in Sandringham, Norfolk. (Photo by Joe Giddens/PA Images via Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Prince Charles; Prince of Wales Catherine, Duchess of Cambridge, Meghan Markle and Prince Harry attend Christmas Day Church service at Church of St Mary Magdalene on December 25, 2017 in King's Lynn, England. (Photo by Chris Jackson/Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: (L-R) Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge, Meghan Markle and Prince Harry attend Christmas Day Church service at Church of St Mary Magdalene on December 25, 2017 in King's Lynn, England. (Photo by Chris Jackson/Getty Images)
TOPSHOT - (L-R) US actress and fiancee of Britain's Prince Harry Meghan Markle and Britain's Prince Harry arrive to attend the Royal Family's traditional Christmas Day church service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2017. / AFP PHOTO / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
(L-R) US actress and fiancee of Britain's Prince Harry Meghan Markle and Britain's Prince Harry arrive to attend the Royal Family's traditional Christmas Day church service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2017. / AFP PHOTO / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
Terms of release, which must be included and passed-on to anyone to whom this image is supplied: USE AFTER 31/05/2018 must be cleared by Kensington Palace. This photograph is for editorial use only. NO commercial use. NO use in calendars, books or supplements. Use on a cover, or for any other purpose, will require approval from Art Partner and the Kensington Palace Press Office. There is no charge for the supply, release or publication of this official photograph. This photograph must not be digitally enhanced, manipulated or modified and must be used substantially uncropped. Copyright in the photographs is vested in Prince Harry and Ms. Meghan Markle. Publications are asked to credit the photograph to Alexi Lubomirski. WINDSOR, UNITED KINGDOM - DECEMBER: (EDITOR'S NOTE: Image was shot in black and white. Colour version not available.) In this handout photo provided by Kensington Palace, Prince Harry and Meghan Markle pose for one of two official engagement photos at Frogmore House in December, 2017 in Windsor, United Kingdom. (Photo by Alexi Lubomirski via Getty Images)
NO SALES. Terms of release, which must be included and passed-on to anyone to whom this image is supplied: USE AFTER 31/05/2018 must be cleared by Kensington Palace. This photograph is for editorial use only. NO commercial use. NO use in calendars, books or supplements. Use on a cover, or for any other purpose, will require approval from Art Partner and the Kensington Palace Press Office. There is no charge for the supply, release or publication of this official photograph. This photograph must not be digitally enhanced, manipulated or modified and must be used substantially uncropped. Copyright in the photographs is vested in Prince Harry and Ms. Meghan Markle. Publications are asked to credit the photograph to Alexi Lubomirski. WINDSOR, UNITED KINGDOM - DECEMBER: In this handout photo provided by Kensington Palace, Prince Harry and Meghan Markle pose for one of two official engagement photos at Frogmore House in December, 2017 in Windsor, United Kingdom. (Photo by Alexi Lubomirski via Getty Images)
NO SALES. Terms of release, which must be included and passed-on to anyone to whom this image is supplied: USE AFTER 31/05/2018 must be cleared by Kensington Palace. This photograph is for editorial use only. NO commercial use. NO use in calendars, books or supplements. Use on a cover, or for any other purpose, will require approval from Art Partner and the Kensington Palace Press Office. There is no charge for the supply, release or publication of this official photograph. This photograph must not be digitally enhanced, manipulated or modified and must be used substantially uncropped. Copyright in the photographs is vested in Prince Harry and Ms. Meghan Markle. Publications are asked to credit the photograph to Alexi Lubomirski. WINDSOR, UNITED KINGDOM - DECEMBER: (EDITOR'S NOTE: Image was shot in black and white. Colour version not available.) In this handout photo provided by Kensington Palace, Prince Harry and Meghan Markle pose for one of two official engagement photos at Frogmore House in December, 2017 in Windsor, United Kingdom. (Photo by Alexi Lubomirski via Getty Images)
Prince Harry and Meghan Markle arriving for the Queen's Christmas lunch at Buckingham Palace, London. (Photo by Jonathan Brady/PA Images via Getty Images)
LONDON, ENGLAND - DECEMBER 20: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 24 HOURS AFTER CREATE DATE AND TIME) Prince Harry and Meghan Markle arrive for the Queen's Christmas lunch at Buckingham Palace on December 20, 2017 in London, England. (Photo by Karwai Tang/WireImage)
NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and Meghan Markle go on a walk about at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor Castle in May 2018. (Photo by Samir Hussein/Samir Hussein/WireImage)
NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and Meghan Markle go on a walk about at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor Castle in May 2018. (Photo by Samir Hussein/WireImage)
NOTTINGHAM, UNITED KINGDOM - DECEMBER 01: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 24 HOURS AFTER CREATE DATE AND TIME) Prince Harry and Meghan Markle attend a Terrence Higgins Trust World AIDS Day charity fair at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor in May 2018. (Photo by Max Mumby/Indigo/Getty Images)
NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and fiancee Meghan Markle attend the Terrence Higgins Trust World AIDS Day charity fair at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor Castle in May 2018. (Photo by Karwai Tang/WireImage)
Britain's Prince Harry and his fiancee, US actress Meghan Markle gesture during their visit to Nottingham Academy in Nottingham, central England, on December 1, 2017. Prince Harry and his American actress fiancee Meghan Markle were welcomed by hundreds of people on their first royal visit as a couple since announcing their engagement this week. / AFP PHOTO / POOL / Andy Stenning (Photo credit should read ANDY STENNING/AFP/Getty Images)
NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and his fiancee US actress Meghan Markle pose for a photograph with the cast and crew of a hip hop opera performed by young people involved in the Full Effect programme at the Nottingham Academy school on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor in May 2018. (Photo by Matt Dunham - WPA Pool/Getty Images)
NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and his fiancee US actress Meghan Markle visit the Terrence Higgins Trust World AIDS Day charity fair at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor in May 2018. (Photo by Adrian Dennis - WPA Pool/Getty Images)
Britain's Prince Harry and his fiancee US actress Meghan Markle greet wellwishers on a walkabout as they arrive for an engagement at Nottingham Contemporary in Nottingham, central England, on December 1, 2017 which is hosting a Terrence Higgins Trust World AIDS Day charity fair. Prince Harry and Meghan Markle visited Nottingham in their first set of engagements together since announcing their engagement. / AFP PHOTO / Oli SCARFF (Photo credit should read OLI SCARFF/AFP/Getty Images)
LONDON, ENGLAND - NOVEMBER 27: Prince Harry and Meghan Markle attend an official photocall to announce their engagement at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Karwai Tang/WireImage)
LONDON, ENGLAND - NOVEMBER 27: Prince Harry and Meghan Markle attend an official photocall to announce their engagement at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Karwai Tang/WireImage)
LONDON, UNITED KINGDOM - NOVEMBER 27: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 24 HOURS AFTER CREATE DATE AND TIME) Prince Harry and Meghan Markle attend an official photocall to announce their engagement at The Sunken Gardens, Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - NOVEMBER 27: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 24 HOURS AFTER CREATE DATE AND TIME) Prince Harry and Meghan Markle attend an official photocall to announce their engagement at The Sunken Gardens, Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, ENGLAND - NOVEMBER 27: Prince Harry and Meghan Markle during an official photocall to announce the engagement of Prince Harry and actress Meghan Markle at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - NOVEMBER 27: Prince Harry and Meghan Markle during an official photocall to announce the engagement of Prince Harry and actress Meghan Markle at The Sunken Gardens at Kensington Palace on November 27, 2017 in London, England. Prince Harry and Meghan Markle have been a couple officially since November 2016 and are due to marry in Spring 2018. (Photo by Chris Jackson/Getty Images)
TORONTO, ON - SEPTEMBER 30: Meghan Markle and Prince Harry are seen at the Closing Ceremony on day 8 of the Invictus Games Toronto 2017 at the Air Canada Centre on September 30, 2017 in Toronto, Canada. The Games use the power of sport to inspire recovery, support rehabilitation and generate a wider understanding and respect for the Armed Forces. (Photo by Karwai Tang/WireImage)
TORONTO, ON - SEPTEMBER 30: Meghan Markle and Prince Harry are seen on day 8 of the Invictus Games Toronto 2017 on September 30, 2017 in Toronto, Canada. The Games use the power of sport to inspire recovery, support rehabilitation and generate a wider understanding and respect for the Armed Forces. (Photo by Karwai Tang/WireImage)
TORONTO, ON - SEPTEMBER 25: Meghan Markle and Prince Harry attend the Wheelchair Tennis on day 3 of the Invictus Games Toronto 2017 at Nathan Philips Square on September 25, 2017 in Toronto, Canada. The Games use the power of sport to inspire recovery, support rehabilitation and generate a wider understanding and respect for the Armed Forces. (Photo by Karwai Tang/WireImage)
TORONTO, ON - SEPTEMBER 25: Meghan Markle and Prince Harry attend the Wheelchair Tennis on day 3 of the Invictus Games Toronto 2017 at Nathan Philips Square on September 25, 2017 in Toronto, Canada. The Games use the power of sport to inspire recovery, support rehabilitation and generate a wider understanding and respect for the Armed Forces. (Photo by Karwai Tang/WireImage)
TORONTO, ON - SEPTEMBER 25: Meghan Markle and Prince Harry attend wheelchair tennis on day 3 of the Invictus Games Toronto 2017 on September 25, 2017 in Toronto, Canada. The Games use the power of sport to inspire recovery, support rehabilitation and generate a wider understanding and respect for the Armed Forces. (Photo by Samir Hussein/Samir Hussein/WireImage)
TORONTO, ON - SEPTEMBER 25: Meghan Markle and Prince Harry attend wheelchair tennis on day 3 of the Invictus Games Toronto 2017 on September 25, 2017 in Toronto, Canada. The Games use the power of sport to inspire recovery, support rehabilitation and generate a wider understanding and respect for the Armed Forces. (Photo by Samir Hussein/WireImage)
TORONTO, ON - SEPTEMBER 25: Prince Harry (R) and Meghan Markle (L) attend a Wheelchair Tennis match during the Invictus Games 2017 at Nathan Philips Square on September 25, 2017 in Toronto, Canada (Photo by Chris Jackson/Getty Images for the Invictus Games Foundation )
TORONTO, ON - SEPTEMBER 25: Meghan Markle and Prince Harry attend the Wheelchair Tennis on day 3 of the Invictus Games Toronto 2017 at Nathan Philips Square on September 25, 2017 in Toronto, Canada. The Games use the power of sport to inspire recovery, support rehabilitation and generate a wider understanding and respect for the Armed Forces. (Photo by Karwai Tang/WireImage)
TORONTO, ON - SEPTEMBER 25: Prince Harry (R) and Meghan Markle (L) attend a Wheelchair Tennis match during the Invictus Games 2017 at Nathan Philips Square on September 25, 2017 in Toronto, Canada (Photo by Chris Jackson/Getty Images for the Invictus Games Foundation)
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