<Tr> <Th> Nieces </Th> <Td> Steffy Forrester Phoebe Forrester Rosie Forrester (adoptive) Lizzy Forrester </Td> </Tr> <P> Thorne Forrester is a fictional character on CBS soap opera The Bold and the Beautiful . The character was played by Clayton Norcross from the show's premiere in 1987 until 1989, by Jeff Trachta from 1989 until 1996 and Winsor Harmon from 1996 to 2016 . In September 2017, Harmon announced that the role of Thorne was to be recast, and several days after, it was announced that daytime veteran Ingo Rademacher had been cast in the role . </P> <P> Actor Clayton Nocross first debuted in the role of Thorne in the serial's premiere episode on March 23, 1987 . He remained in the role until 1989, when he was recast with Jeff Trachta . In 1996, Trachta was let go from the role and was recast with former All My Children actor Winsor Harmon . In May 2010, it was announced that Harmon had been downgraded to a recurring capacity, following a "mutual decision" between Harmon and the higher ups at The Bold and the Beautiful . On September 23, 2017, Harmon announced that executive producer Bradley Bell intended to recast the role of Thorne . Two days later, TV Insider's Michael Logan announced that former General Hospital actor Ingo Rademacher had been cast in the role of Thorne . He will make his first appearance on November 27, 2017 . </P> <P> Thorne Forrester is the younger son of Eric and Stephanie Forrester . Thorne was raised in Beverly Hills with his siblings, Ridge, Kristen, and Felicia Forrester . Thorne grew up in the shadow of big brother Ridge . Thorne had a crush on Caroline Spencer, even though she was engaged to Ridge . When Caroline dumped Ridge for having a one - night stand before their wedding, Thorne befriended Caroline, and the friendship turned to romance . But Thorne knew Caroline still loved Ridge, so he convinced Ridge's new girlfriend, Brooke Logan, to hide a letter in which Ridge professed his devotion to Caroline . Thorne and Caroline married soon after, although Caroline was furious when she learned of Thorne's part in hiding the letter . </P>

Who plays thorn on the bold and the beautiful
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