Sheila Carter
The role was portrayed by Kimberlin Brown for a total of 16 years. Her first run was on "The Young and the Restless" from May 1990 to May 20, 1992, when the character crossed over to "The Bold and the Beautiful" from May 21, 1992, to October 2, 1998, again from May 24 to November 5, 2002, and again finally from September 26 to October 10, 2003. Despite being a regular cast member on "The Bold and the Beautiful", Brown returned to "The Young and the Restless" for several guest appearances beginning on October 27, 1992. Brown departed on November 5, 1992, and reappeared for one episode on December 23, 1992. She continued making appearance from January 7 to 14, 1993, February 19, 1993, to March 2, 1993, October 11, 1993, October 19 to 27, 1993, January 12, 1994, and February 28, 1995, until March 2, 1995.
Donna Logan
Donna Logan is a fictional character from the CBS soap opera "The Bold and the Beautiful". The character was played by Carrie Mitchum on a contract basis from 1987 to 1991 and made guest appearances in 1994, 1995, 1996 and 2001 and then by Jennifer Gareis as a series regular from 2006 to 2015. Since 2015, Gareis has appeared in a recurring capacity. In January 2018, Gareis teased her return to the serial via-her social media accounts. In September 2018, Gareis announced she was once again appearing in a regular capacity and she made her return on October 29, 2018.