The cast of The Bold and the Beautiful would not be the same without the talented and fun-loving actress Alley Mills! Alley has been essential to the show for the past 14 years and, while the now 69-year-old was just moved from series regular to reoccurring status, she continues to bring the energy fans have fallen in love with!

While her older sister "Donna's" attempts at setting "Katie" up may have failed, "Katie" eventually found love with "Bill Spencer". Their relationship causes some anxiety for the "Forresters" who have sold "Bill" their company!

Originally played by actress Nancy Sloan, Heather Tom would take over the role of "Katie Logan" in 2007! The now 44-year-old has since won six Daytime Emmy Awards for her performance, and her son Zane, has also become a part of The Bold and the Beautiful as "Katie's" onscreen son "Will". In addition to starring on the show, Heather also runs her own design business with her husband James Anchor!

The new CEO of Spencer Publications, "Bill Spencer" has become a character that is chock-full of surprises! Eventually revealing his true motivations for taking over the "Forrester" family's business, "Bill" and "Katie's" relationship suffers its ups and downs, especially when "Steffy Forrester" gets involved!

Joining the cast in 2009, Don Diamont is a relative newcomer to The Bold and the Beautiful, but has made quite the impression on fans! Don Diamont is known for his sexy looks and even modeled for Playgirl magazine in the past! At 57-years-old, Diamont is still one of the sexiest hunks of the show! RELATED: 8 Facts About The Bold and the Beautiful