Lauren Koslow and Zachariah Koslow, who played mother and son on the show, are also mother and son in real life.
John McCook plays the father of Ronn Moss, who is only seven years younger. McCook had to dye his hair gray to seem older when the show started in 1987.
The sons of Katherine Kelly Lang, Jeremy Snider and Julian Snider, played her character Brooke Logan's children Rick and Bridget as children.
Art imitating life: The Forrester Mansion as seen on TV was modeled after the real life mansion of series creators William J. Bell and Lee Phillip Bell (once owned by Howard Hughes) whereas the estate of their son Bradley Bell served as the model for the house of Brooke Logan. The backdrop shots of two other sets belong to houses owned by the Bell dynasty, though the belonging sets used on the show share no similarities with reality: The house of William J. Bell Jr. and his wife 'Maria Arena Bell' serves as the Bel Air Mansion of Ridge and Taylor Forrester, actress Lauralee Bell calls the Marone Mansion home in real life.
Ashleigh Brewer who portrays Ivy Forrester had to leave the Australian Soap opera Neighbours to appear in this show. Her Character was Kate Ramsay in Neighbours.
In 2003 the show made "Daytime Emmy Award"-history when Susan Flannery and Jennifer Finnigan were both awarded "Emmys" second year in a row - claiming both 'Outstanding Lead Actress' and 'Outstanding Younger Actress' for their roles on 'The Bold And The Beautiful'.
After Linda Gray joined the cast, there was a reunion with Larry Hagman (to be written in as a guest character). When Larry Hagman became ill again, the show couldn't insure him and the plans were thrown out. Linda Gray's character was eventually written out of the show.
Then-writer Maria Arena Bell named Bobbie Eakes character after the prominent department store "Macy's" as a nod to the fashion industry when the show decided to bring on a daughter for fashionista Sally Spectra (Darlene Conley).
Crossover-mania: The following actors brought their Genoa City alter-egos from The Young and the Restless (1973) to Los Angeles: Kimberlin Brown (Sheila Carter, 1992 onwards), Tracey E. Bregman (Lauren Fenmore Carter, 1992 onwards), Don Diamont (Brad Carlton, 1993), Peter Barton (Scott Grainger, 1993), Peter Bergman (Jack Abbott, 1998), Eric Braeden (Victor Newman, 1999), Susan Seaforth Hayes (Joanna Manning, 2003), Jeanne Cooper (Katherine Chancellor, 2005), Eileen Davidson (Ashley Abbott, 2007), Darcy Rose Byrnes (Abby Abbott Carlton, 2007), Lauralee Bell (Christine Blair, 2007). While Susan Flannery (Stephanie Forrester, 1990s), John McCook (Eric Forrester Sr., 1990s, 2005 & 2008), Katherine Kelly Lang (Brooke Logan, 1999 & 2007), Maeve Quinlan (Megan Conley, 1999) and Lesli Kay (Felicia Forrester, 2008) brought their LA-alter-egos to Genoa City for guest appearances, only two character permanently crossed over: Adrienne Frantz first played Amber Moore on The Bold and the Beautiful (1987) from 1997 to 2005 before joining The Young and the Restless (1973) in the same role in 2006, as did Sean Kanan who Deacon Sharpe back to life in Genoa City in 2009.
Several actors, appearing on Dallas (1978), later played characters on the show: Susan Flannery (Leslie Stewart on Dallas (1978)/Stephanie Forrester on The Bold and the Beautiful (1987), Charles Grant (David Shulton/Grant Chambers)Lesley-Anne Down (Stephanie Rodgers/Jacqueline Payne), Linda Gray (Sue Ellen Ewing/Priscilla Kelly) and Patrick Duffy (Bobby Ewing/Stephen Logan Sr.).
Despite taking place in the same soap opera universe several former stars of The Young and the Restless (1973) joined the show in completely different roles (in order of appearance): John McCook (Lance on Y&R, Eric on B&B), Lauren Koslow (Lindsey on Y&R, Margo on B&B), Jim Storm (Neil on Y&R, Bill Sr. on B&B), Darlene Conley (Rose on Y&R, Sally on B&B), Barbara Crampton (Leanna on Y&R, Maggie on B&B), Andrea Evans (Patty on Y&R, Tawny on B&B), Rick Hearst (Matt on Y&R, Whip on B&B), Jennifer Gareis (Grace on Y&R, Donna on B&B), Heather Tom (Victoria on Y&R, Katie on B&B), Don Diamont (Brad on Y&R, Bill Jr. on B&B)
Between 2003 and 2005 the actress' portraying Phoebe and Steffy were changed three times. Jordan Mella and Chandler Mella assumed the roles from Brynne and Cameryn McNabb. Jordan & Chandler held the role for only a few episodes before they were replaced by Kylie Tyndall and Keaton Tyndall. Kylie and Keaton went on to hold the role for over a year before the characters were aged and replaced by, Alex Hoover and Addison Hoover who became the first twins to contract the role. After 6 months and a handful of episodes Alex and Addison were dropped to recurring status and later replaced by Mackenzie Mauzy resulting in the disappearance of one twin.
Although they have remained with the show since the beginning the roles of Katherine Kelly Lang and Ronn Moss have been recast for short periods during this time. Brooke Logan was also played by Catherine Hickland in 1987 as a sick leave replacement and Sandra Ferguson in 1997 as a maternity leave replacement whereas Lane Davies subbed in as Ridge Forrester in 1992.
Ronn Moss was the first person to appear onscreen in the series, as Ridge Forrester. Technically, John McCook had the first line in the series in the next shot as Eric Forrester, while talking in the background to some extras, while Clayton Norcross had the first proper scripted line in the series as the first Thorne Forrester (to Ridge). Nancy Sloan as Katie was the first of the Logan family to appear in the next scene, followed by Katherine Kelly Lang as Brooke.
Barbara Crampton and Maitland Ward played mother and daughter Maggie and Jessica Forrester. Maitland Ward shares the same birthday February 3 with Kathleen Kinmont, Barbara Crampton's co-star in Fraternity Vacation.
Ashleigh Brewer quit her role on this show, so she could return home to Australia. A few weeks later it was announced she signed a 6 month contract with Australian Soap Home and Away.